Articles (2020)

Lightweight Frameless Backpacks State of the Market Report 2011
Part 2A – Technical Evaluation – Measurement of Pack Volume and Volume Reduction Capability

We “lab’ test thirteen frameless backpacks to measure their actual volume and compare their volume reduction capability, which are important factors when choosing a frameless pack. Our data reveal a few surprises!

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LAUFBURSCHE huckePACK Review

German innovation hits the frameless backpacking market: water resistant with a volume that manages to work well for overnighters and week-long expeditions. Is it too good to be true?

Introduction

The LAUFBURSCHE huckePACK evolved steadily to reach its current design. Comparing the prototype pack and the commercial pack side by side, and looking at the early designs, I see that they have come a long way. The initial design was drawn up to suit the needs of Mateusz Szultk, the owner of LAUFBURSCHE, one of the early adopters of ultralight backpacking in Germany. As usual in UL circles, after using commercial lightweight packs but wanting to decrease his load further, Mateusz sat down to design and sew his own pack. He posted the original design on the BPL MYOG forum and the German Trekking Ultraleicht forum, and soon received a number of requests for his packs.

At that point Mateusz, an architect by education, decided to design the pack further and offer them in a limited series to interested people. The design went through four major evolution steps, which each had a dozen sub-steps, resulting in about fifty prototype packs until the final design was deemed good enough for retail. Every pack design was tested by friends and UL aficionados to gather feedback and further improve the design. The innovative lid of the pack, which makes water leaking in through the lid nearly impossible and is the characteristic feature of the pack, was developed during the third major step. It was hailed by those who used it as a breakthrough in pack design, and the interest in the packs started to further climb. At this point, Mateusz decided to make LAUFBURSCHE his main business – alas, establishing a cottage business is very difficult in the bureaucratic environment of Germany, so it took a while until his business was ready to hang its shingle.

Description

The LAUFBURSCHE huckePACK is designed for ultralight backpacking trips, able to comfortably carry gear and food ranging from an overnighter to trips of two or more weeks. It comes in two sizes – Small and Big – and four different back length sizes – S, M, L and XL – allowing people of all heights to find a suitable pack. The hipbelt is a one-size-fits-all design, which can be shortened to the appropriate personal length of the individual; caps to close the cut-off ends are included so that they can’t get frayed.

The internal volume ranges from 28 liters on the small pack in a S Torso Length to 57 liters on the big pack in a XL Torso Length, and both have the possibility of carrying an additional 9 to 11 liters with the extension collar fully extended. The lid has an elastic rim which stretches out when the extension collar is fully loaded, and will also then cover and protect the entry to the pack from rain, snow, and dust entering it.

The outside pockets and optional hipbelt pockets give additional space for the likes of camera, Platypus, rain gear, and tarp. Volumes range from 1.5 liters for the hipbelt pockets, 5.0 liters for the big rear pocket, 2.0 liters for the diagonal side pocket, and 3.0 liters for the high cut side pocket. The lid pocket is spacious, and I guesstimate that it has a conservative 1.0 liter of volume. Total maximum volume on my tested L Torso Length pack is 67 liters.

The huckePACK has a simple side compression system which helps to flatten the pack in the top part, and it works together with the lid, which also helps to compress the pack from the front and keeps the load close to the back. Having used an ULA Ohm and its excellent side-compression system, I found the huckePACK’s side compression slightly lacking when loaded with little gear. However, this is only of concern when one is not using a closed cell foam (CCF) pad as a burrito frame in the pack – the CCF pad helps to compress the pack more evenly. There are still plenty of gear loops on the pack which, in combination with the provided Dyneema or elastic cord, help with compressing the pack when lightly loaded.

The suspension system of the huckePACK consists of the hipbelt and the shoulder straps, including load lifters. The core element to transfer the load between shoulders and hips will be whatever pad you add as an internal form or an external backpad. The S-Shaped shoulder straps and the hipbelt are made of a 3D padded mesh.

The pack is completely modular with its extras, and users can modify them for their needs appropriately. This means sternum strap, trekking pole holders, bungie cord and backpad cord can be removed or attached as needed, making it versatile for the trip at hand. If you cut off straps to the “appropriate for you” length, it is possible to save another 20 to 30 grams (0.7 to 1.1 oz), pushing the pack close to the 400-gram (14.1-oz) line.

The huckePACK comes standard in Dyneema X Grid, the same currently used by Mountain Laurel Designs and ZPacks. Other materials, like X-Pac, Cuben and 70 denier silynlon, are available as a special option and make the pack up to 90 grams (3.2 oz) lighter with the same features. The mesh pockets are made from a light yet durable mesh.

LAUFBURSCHE huckePACK Review - 1
Views on the LAUFBURSCHE huckePACK: Top left shows the front of the huckePACK, featuring the front pocket made of durable and stretchy mesh fabric. The trail pole/ice axe holders are on the side of the front mesh pocket, two on each side with a top and bottom one. Top right shows the back of the huckePACK, with a Therm-a-Rest Z Lite (four segments) as a backpad, the contoured shoulder straps, and the hipbelt cinched completely closed. Bottom right shows the right side of the pack, with the diagonal side pocket, while bottom left shows the left side of the pack with the high-cut side pocket. In these photos, the pack is packed without any kind of frame except the Z Lite as a backpad.

Features

  • Lid pocket with covered zipper
  • Mesh pockets on both sides and front
  • Hipbelt pockets (optional)
  • Contoured shoulder straps
  • Side compression straps
  • Waterproof lid design
  • Detachable sternum strap
  • Load lifters
  • Left and right hydration ports
  • Internal hang clip for hydration system or keys and valuables
  • Attachment system for back pad – fits up to six segments of a Therm-a-Rest Z Lite
  • Three elastic bands on each shoulder strap for hydration hose, compass, or other gear that needs to be kept handy
  • Trail pole/ice axe holders
  • Haul loop

LAUFBURSCHE huckePACK Review - 2
Left: the bottom of the back, showing where the front mesh pocket starts. Right: the open lid pocket, which has enough space for a notebook and pen, a book, documents, money, and a compass.

LAUFBURSCHE huckePACK Review - 3
With and without back pad. A back pad can be used to increase comfort and ventilation, but is not mandatory for a satisfying carrying experience. A foldable or square-shaped mat works best as a back pad.

LAUFBURSCHE huckePACK Review - 4
A look at the shoulder straps. Left: the outside with two of the three elastic bands for a hydration tube or other gear which needs to be close at hand, and the removable sternum strap. Right: the backside of the shoulder strap, where we see the 3D mesh, which is highly breathable and allows for great ventilation – another unique feature of the pack.

LAUFBURSCHE huckePACK Review - 5
The innovative lid of the huckePACK is a waterproof design. Top left: the open pack. Top right: how the front of the neck is folded inside. Bottom left: the closing mechanism; here the front of the pack gets hooked into an elastic loop at the inside back of the pack, to stay in place. Bottom right: the closed lid – the backside is moved forward and closed with a buckle on the left and right, while the elasticized rim snuggles up to the main pack.

LAUFBURSCHE huckePACK Review - 6
Hydration ports can be found on both sides of the pack.

LAUFBURSCHE huckePACK Review - 7
Full look at the optional hipbelt pockets. They come with dual YKK water resistant zippers and in different sizes: on the left is the 1-liter model, on the right is the 1.5 liter model.

LAUFBURSCHE huckePACK Review - 8
The 1-liter pocket easily holds a Micro-Four Thirds camera like the Panasonic Lumix GF2, with spare room for extra lenses and batteries.

LAUFBURSCHE huckePACK Review - 9
The hipbelt pockets are secured to the hipbelt via an elastic band and secured to the pack via a small clip.

Field Testing

I tested the huckePACK on various trips, ranging from a nine-day trip in Russian Karelia to a three-day trip in the Swedish Fjells as well as countless trips in the Finnish forests and fjells. Weight carried was between 5 kg (11 lbs) for a weekend trip to 17 kg (37.5 lbs) for the nine-day expedition in Russia.

My initial impressions, which fortified themselves over continuous use, are as follows:

  • Impeccable craftsmanship: no loose threads, the right stitches for different areas, and well made.
  • Dyneema X Gridstop is used as the main fabric, ensuring a bombproof pack which also survives bushwhacking and off-trail walking for nine days straight.
  • The shoulder straps are ideal, one barely feels them as they snuggle up comfortably against the body, never in the way and carrying the weight comfortably.
  • The net pockets are an appropriate size and durable; they can comfortably carry a tarp, kuksa, sunglasses, and various other small stuff in the front pocket, while the side pockets hold a 1-liter Platypus and snacks which are easy to reach when wearing the pack.
  • The hipbelt transfers and carries the weight satisfactorily, and like the shoulder straps, adapts well to the carrier’s body.
  • Rectangular shape, which in combination with a Z Lite pad as a back padding, is comfortable against the body.
  • Functions well as a summit or daypack.
  • The lid pocket is nearly 100% waterproof and is big enough for map, compass, and book, as well as pen and paper with some room to spare.
  • The lid itself is a true innovation, and is an improvement over the common roll-top and cinch lids of other frameless packs.
  • It is easy to remove and re-attach the sternum strap and other modular parts one might not need for a particular trip.
  • Trail pole holders are placed well. It’s easy to remove or attach poles, even with full front and side mesh pockets.
  • Attachment for the back pad is convenient, making a pad easy and quick to insert/remove.
  • Roomy enough for a UL base load and food, fuel, and water for up to twelve days.
  • Different possibilities to pack/reinforce the rucksack: burrito style with a CCF pad; without any frame; a Therm-a-Rest Z Lite as a half frame inside; with a Z Lite as a backpad and nothing else; both a CCF pad and a Z Lite.

The heaviest load I carried with the huckePACK was 17 kg (37.5 lbs), which included food for ten days, water, and gear for an unsupported trip through Russian Karelia. Even with such a load, the huckePACK carried surprisingly well and comfortably despite the lack of stays; at no point did it feel as though the pack or material were overburdened. However, the recommended upper limit which should be carried with the huckePACK is 12 kg (26.5 lbs), which is in line with what other manufacturers recommend as a maximum load for their frameless packs.

As a summit pack, the huckePACK performs well. It can be compressed sufficiently to not have too much loose material and empty space, though I recommend to keep a CCF pad as a burrito frame in it to have the best load transfer and comfort. With a sub 4-kg (8.8-lb) load, it feels like one isn’t carrying anything, and with a normal load of around 8 kg (17.6 lb), mobility and comfort remained excellent, thanks to the more Alpine style of not being a deep pack.

For packrafting (anything longer than a day trip), I would recommend using another pack. Keep in mind that despite DXG being fairly water resistant, it is not waterproof – pack your gear in dry bags. I prefer to carry the rolled up packraft inside the pack, as this gives the best carry comfort – the weight being down in the pack and close to my back – with the minus that all other gear needs to go on top and needs to come out when you want to get the packraft out.

I also used the huckePACK for two weeks while ski and snowshoe guiding as a daypack, and I found it coped well with the extreme cold while granting me complete freedom of movement. It worked best in this case without using the hipbelt and relying on the shoulder straps and sternum strap to keep the sub-4-kg (8.8-lb) load in place. This allowed the most freedom of movement, and also ensured that I could take the pack quickly off when needed.

For the majority of users, a frameless pack still needs a frame of sorts. In the ultralight community, we tend to use our sleeping pads for this purpose, making them serve double duty. I use a Multimat Adventure CCF pad in a burrito style, and usually combine this with four to six sections of a Therm-a-Rest Z Lite for the back panel padding – the Z Lite also serves double duty and functions as a sit pad in breaks and at camp.

Comparison

The following table lists comparable frameless backpacks which are similar in volume and weight to the LAUFBURSCHE huckePACK. All weights are as stated by the manufacturer and, as far as possible, represent a “naked” weight of an Medium sized pack. Torso length of the huckePACK is M, the volume is without the extension collar.

Model Weight (g/oz) Internal Volume (L) Cost Fabric
ZPacks Blast 26 210 / 7.4 43 $185 Cuben Fibre
ZPacks Dyneema X 26 335 / 11.8 43 $185 Dyneema X
MLD Prophet 411 / 14.5 33 $180 Dyneema X
Six Moon Designs Swift 2011 425/ 15.0 38 $110 210 denier Dyneema
MLD Exodus 425 / 15.0 39 $185 Dyneema X
LAUFBURSCHE huckePACK 432 / 15.2 38 €195* Dyneema X
ULA CDT 481 / 17.0 34 $135 Dyneema Gridstop
MLD Ark 496 / 17.5 52 $195 Dyneema X
Gossamer Gear Mariposa (without aluminum stay) 536 / 18.9 46 $170 Ripstop nylon
*The price is given in Euros (€) – as the Dollar and Euro exchange rate fluctuates constantly, we recommend you check the current rate at XE.com. While the price might seem high for U.S. customers, I’d like to point out that European customers pay similar prices for packs made in the USA after shipping, VAT, and import taxes are added, which means ultimately prices are similar on both sides of the Atlantic.

Closest in this comparison, when looking at volume and weight, are the MLD Exodus and the Six Moon Designs Swift 2011, with the latter also being the most affordable one. The ZPacks Blast pack is the lightest option in this comparison, but is made of Cuben fibre – which might not be as durable as the Dyneema used by most others.

Assessment

I tested a finished product made of Dyneema X Grid, though I also have used a prototype silynlon pack before purchasing this pack. Besides the different material and the addition of the lid pocket in the DXG pack, and the silnylon being a size large, they are similar in construction. Both packs are of a quality I haven’t yet seen in comparison to other cottage manufacturers and bigger companies.

The LAUFBURSCHE huckePACK, like other frameless backpacks, can be packed in a variety of ways. My personal favourite is the burrito style frame, in which a Closed Cell Foam (CCF) pad or inflatable mat is used as a rolled frame in the backpack, with the pad giving the pack more structure and transferring the weight to the hipbelt. Together with a Z Lite backpad, this packing style makes the huckePACK a comfortable pack, carrying lightweight loads with ease. But even without any sort of frame, I used the pack to carry 17 kg (37.5 lbs) on an expedition in Russia, and it performed well. I have spoken and hiked with other huckePACK users who never use any kind of frame, packing the pack in a way which allows them to carry their load comfortably nevertheless. While this is possible, I do recommend using a burrito style frame in the huckePACK, as this gives the pack a good shape for packing and helps with optimal load transfer.

The use of Dyneema X Gridstop works well for this pack and follows the trend of other cottage manufacturers who also use the lightweight yet durable material. I agree with what Will said in a recent review, “Dyneema X is a superb fabric for backpacks, so purchasing a backpack made with this fabric is an investment in longevity.” However, it is not the lightest option available, and while some might claim that Cuben fibre is not very durable I yet have to see this being a problem in practice – there are plenty of thru-hikers which use Cuben fibre packs on the PCT and CDT, for example.

To get the best carry experience is it paramount that you choose the right size for your pack. Ryan Jordan’s Quantitative Analysis of Backpack Suspension Performance article still is the word to go by, and his recommendation of taking a pack with a slightly longer back is what you should keep in mind when you choose a pack. “The effective user torso length is the user torso length plus one inch” sums it up very well.

Specifications

Year/Model 2010 LAUFBURSCHE huckePACK
Style Frameless toploader
Fabric Dyneema X Gridstop
Pack Volume Total Volume: 67 liters
Main Body: 42 – 53 liters
Front Mesh Pocket: 5 liters
Diagonal Side Pocket: 2 liters
High-cut Side Pocket: 3 liters
Lid Pocket: 1 liter
Hipbelt Pockets: 1.5 liters each
Recommended Loads Base Load: 5 kg or less
Maximum Recommended Load: 12 kg
Pack Weight Torso length M, Size Big, in Dyneema X Gridstop
Measured Weight: 428 grams
Manufacturer Specification: 432 grams
Frame Sizing S – 38-43 cm torso length
M – 43- 49 cm torso length
L – 49-54 cm torso length
XL – 54-60 cm torso length
Hipbelt Sizing One size fits all to a maximum girth of 150 cm
Included Dyneema cord and bungie cord for back pad panel and additional compression,
caps to protect user-shortened hipbelt from getting frayed, sternum strap,
two ice axe/trail pole holders, haul loop, two hydration hose ports
Options Cuben fibre pack liner, hipbelt pockets in different materials
MSRP €195

What’s Good

  • Excellent craftsmanship.
  • Four different torso lengths and two sizes, as well as customization options allow for individual, customized packs.
  • Durable, lightweight, and high-quality materials used.
  • Comfortably carries loads between 5 and 12 kg.
  • If a Z Lite is used as a back pad: comfy to carry and adds a bit of ventilation.
  • Comfortable shoulder straps and hipbelt.
  • Durable mesh pockets offer lots of space.

What’s Not So Good

  • Hipbelt pockets not included.
  • Users in humid and hot environments might lack good back ventilation.

Improvements

  • The side compression system could be improved to allow the pack to become flatter when loaded with minimal gear.

Disclosure: The author and/or Backpacking Light purchased this product through normal retail channels with no obligation to the manufacturer for providing a review.

GoLite Tumalo Storm Jacket & Pants Review

The Tumalo line is GoLite’s most affordable WPB rain gear, yet only gives up a little weight on their top-of-the-line offerings. How does it perform?

Introduction

The Tumalo line is GoLite’s most affordable WPB rain gear, yet only gives up a little weight on their top-of-the-line offerings. Using Pertex’s newest 2.5 material, Shield DS, it tries for a balance of breathability and good water protection. Upping the ante for interior moisture control, it uses pit-zips and mesh pockets for further venting options.

Design and Features

GoLite Tumalo Rain Jacket and Pants - 1
GoLite’s Tumalo Storm Jacket and Pants uses Pertex Shield DS to provide breathable protection from foul weather. Although the stock photography from GoLite shows a drawstring on the outside of the pants, it is actually located inside.

The GoLite Tumalo Storm Jacket and Storm Pants are the most affordable offerings of GoLite’s waterproof-breathable line of rain gear. Both are made with Pertex Sheild DS, a version of a 2.5-layer material.

A quick primer on 2.5-layer fabrics. In the past few years many companies have come out with 2.5 waterproof/breathable fabric. The two and a half layers are as follows: First is the shell material of the garment, usually some type of breathable nylon. Denier (think thickness) can vary greatly. A waterproof/breathable membrane (in this case the Pertex Shield DS) is laminated to one side (that will be the inside of the garment). Over the membrane the “half layer” is actually a raised pattern made by printing a polymer onto the membrane. This saves the weight of a true liner and is suppose to aid in transferring moisture away from the skin and to help alleviate the plastic clammy feeling of the membrane.

Here is what Pertex has to say about their Shield DS. “Pertex Shield DS combines a technically advanced face fabric with a proprietary bi-component polyurethane coating technology specifically engineered for unlined garments. This durable and extremely lightweight fabric has exceptional stretch and provides the optimum balance of waterproofness and breathability. The ‘dry touch’ hydrophilic PU coating reduces internal garment condensation and eliminates the sticky, clammy feel of other coatings.” (More on this later.)

The numbers as far as breathability and waterproofness (is that a word?) are as follows:

  • Waterproof – Hydrostatic head – 10,000mm (JIS-L 1092)
  • Breathability – MVTR – 7,000g/m/day (JIS L 1099/A1)

The outer shell is made of 15 x 15 denier mini-rip nylon (55 g s/m). To aid in water shedding, a DWR has been applied to the nylon’s outer surface. While not a soft-shell material, the nylon does have a noticeable amount of stretch to it.

Storm Jacket

Starting at the top, the Storm Jacket has a fixed hood with a small reinforced brim. Thin elastic shock cord runs around the hood and ends on either side with a plastic pull. When pulled close around the face, the cord is held by gasket-type cord locks.

The nylon YKK front zipper is a two-way style, allowing the zipper to be adjusted to a myriad of positions.

The sleeves are gusseted at the arm pits to give an unencumbered range of motion. The material there is grey in color, but does not seem to be any different than the black of the rest of the jacket. The sleeves end with elastic cuffs. The best part of the sleeves, for me, is what is found underneath them. Nine-inch (23-cm) zippers under armpit area open the jacket to the great outdoors, helping hot hikers like me ventilate the interior. The pit-zips are not waterproof but are protected by a small storm-flap.

Waterproof zippers are used on the hand pockets located on the lower sides of the body. These interesting pockets help with ventilation too, as they are made of mesh. Commonly, one layer of mesh is used inside, which is attached to the shell, creating the pocket. GoLite used two layers of mesh, making kind of an envelope. Then by not attaching it to the shell at the top, it makes a large inside pocket too. The inside pockets have no way to close them off, so care must be taken when bending over so as not to lose stuff.

Finally, at the bottom of the jacket there is another elastic shock-cord running through the hem and going through two tethered cord locks. This lets the jacket be cinched tight around the user when conditions call for it.

GoLite Tumalo Rain Jacket and Pants - 2
Left: The Tumalo jacket uses a two-way zipper, which is nice when not wearing a backpack. Right: The mesh pockets are actually two-in-one as seen here. The small North Country Trail map is in the outside pocket while the Chippewa State Forest map is in the inside pocket. Unfortunately heavy or bulky things in both tend to drop to the bottom, where they interfere with my hip belts.

Storm Pants

The Tumalo Storm Pants are pretty basic in their design. The same thin elastic shock cord used on the jacket is run around the waist of the pants. A tethered cord-lock sits front and center. There is no fly, nor are there any front or hip pockets. There is a vertical waterproof zipper on the right thigh that accesses a small cargo pocket. A key clip resides inside. You can stuff the pants into the mesh-backed pocket for compact storage.

To facilitate easily getting into the pants, the legs have an 11-inch (28 cm) ankle zipper at the bottoms. The zippers are protected by a large storm flap with Velcro closures. The cuffs have a half section of elastic in them too.

Both the jacket and the pants are completely seam taped.

GoLite Tumalo Rain Jacket and Pants - 3
Top: Elastic shock-cord, like found in tent poles, is used as the drawstrings for the pants, as seen here, as well as in the jacket’s hood and hem. Bottom Left: The legs have a short zipper to make getting the pants on an easier chore. A Velcro tab lets the ankle cuffs be pulled tight if so desired. Bottom Right: The thigh pocket converts to a stuff sack for the pants. The jacket has no provided storage.

Performance

Spring of 2010 was the wettest I have ever seen. Hiking the southern sections of the Pacific Crest Trail, I saw my rain gear fail miserably, and I jumped at the chance to test the new GoLite Tumalo Storm Jacket and Pants with its highly touted Pertex Shield DS fabric. Unfortunately, by the time I received them it was summer and I hardly saw any more rain. I used them more as a wind block than rain gear, but here is my take on them.

GoLite Tumalo Rain Jacket and Pants - 4
Top: Hiking on the NCT in Itasca State Park right as the rain started. Bottom: Snowshoeing in snowstorm. The Tumalo gear works fine in winter as long as I don’t need to get the pants off, for the ankle zippers are too small to pass my big boots. (And no, I did not forget to remove my snowshoes first!)

Waterproofness

The only sustained rain that I was able to use them during was in Itasca State Park. I spent three hours hiking in solid rain. After having two other brands of 2.5-layer rain gear wet out and actually pass water through the membrane earlier in the year, I was expecting that this could happen with the Tumalos also. I didn’t need to worry. They did an excellent job shedding the water, and, examining them later in camp, I could find no spots that looked as if the fabric was wetting out.

The rest of the summer and fall I only had very short periods of rain during trips in California and Minnesota. This past winter I used them in snow storms in Minnesota where they worked fine too.

Breathability

I am a very hot hiker, and I sweat a lot. The idea of waterproof breathable fabrics has always been of great interest to me, and I have had many types and brands of them over the years. They have all left me less than awed. From my first use of the Tumalo, I could tell that it could not keep up with moisture transfer for me. I was wearing it on a very cold morning in Mississippi Headwaters State Forest as a wind-breaker. Within 30 minutes I was feeling moisture build up on the arms. The same happened on trips in the Sierra Nevada when I would have to don it because of imminent showers. BUT it was noticeably better than all the other rain gear I have used over the years.

While the numbers for vapor transfer are all well and good, it is very hard to actually notice it for me. But one instance made me take notice of the Tumalo’s Shield DS. I hiked an unmaintained and very poorly marked section of the North Country Trail near White Earth Indian Reservation. As it had rained earlier, the extremely overgrown trail had me soaked right away, my pants looked like I had waded through a pond. I belatedly put on my rain gear. I went back and forth with the jacket, only wearing it in the heaviest brush areas, but left the pants on for about five hours. When I did take off the Storm Pants, I found that my hiking pants were pretty much dry. That meant that my body heat while hiking was able to drive all the moisture from the soaked nylon through the Pertex Shield DS. I was amazed, and it really leant credence to the numbers for me.

The pit zips, of course, help a lot for venting the jacket and personally I won’t buy (or even test) a rain shell without them. To be honest, the Tumalo’s pit zips could be a little longer. They are the shortest ones of any of my shells.

Another thing that could help with venting the jacket is to replace the gathered elastic cuffs with a Velcro strap as that would let it be opened wide, allowing air to travel up my arm.

Comfort

I really like the slight stretch of Tumalo’s nylon outer layer. The give at the elbows and knees is quite noticeable, especially in the evenings when I wear them in camp as a warmth/wind block layer.

The hood fits well too. When pulled in to my face in heavy rain or snow it still allows good vision, and the brim, while only lightly reinforced, works well to keep my eyes protected.

Pertex mentions the inner layer, claiming it “eliminates the sticky, clammy feel of other coatings.” It does a very good job with this, but does still have the “plastic” feel of most 2.5-layer fabrics. Besides the Tumalo, I have four other brands of 2.5-layer rain jackets as I write this and it feels better than all but one brand. (Believe it or not, an OmniTech shell from Columbia.)

The only problem I have with the Tumalo’s comfort level is the drawstring of the pants. The thin shock-cord they use is very weak, and I found it difficult to get it tight. I would rather see a regular non-stretch line that will let the pants stay put.

Durability

I have been pretty impressed with the durability of the Shield DS fabric, considering its low weight. Two of my trips saw bushwhacking through some heavy brush. The pants especially have seen a lot of abuse but they have not shown any signs of wear from it.

Another instance in which damage could occur is from my shoes while putting the pants on in a hurry. The short ankle zippers are just long enough for me to get over my size 11 (US) trail runners, but I still catch the soles on the interior. I found that in winter there was no way I could fit them over my boots, so they only saw winter use on day-hikes that I put them on right from the start, leaving them on until I got back to the trailhead. A longer ankle zipper would make them more useful to me.

Assessment

I came away from this review with Tumalo becoming my favorite pieces of rain gear for three-season use. While still not breathable enough to keep me from getting wet inside, under exertion it does better than anything else I have used to date.

There is some room for improvement as far as my likes. Besides the aforementioned pants drawstring and jacket cuffs, I would like to see the jacket’s pockets placed a bit higher on the body. This would let them be much more usable and accessible when a pack’s hip belt is in play.

If GoLite were to offer the Storm Pant in a full-zip style, I would be all over it for winter use.

Specifications

Manufacturer GoLite (http://www.golite.com)
Models Tumalo Pertex 2.5-Layer Storm Jacket and Pants
Fabric Pertex Shield DS
Jacket Features Storm flap, waterproof zip hand pockets, two-way center front zip, pit zips,
fully taped seams, fixed hood with cord lock closures, shock cord closure
on bottom hem
Pants Features Fully taped seams, elasticized waist with draw cord, self-stowing cargo
pocket, calf zips with storm flap, Velcro ankle closure
Weights Listed
Jacket (M): 10 oz (285 g)
Pants (M): 7 oz (189 g)
BPL Weights: Jacket (XL): 10.5 oz (298 g)
Pants (L): 7.5 oz (213 g)
MSRP Jacket: US $150.00
Pants: US $100.00

Disclosure: The manufacturer provided this product to the author and/or Backpacking Light at no charge, and it is owned by the author/BPL. The author/Backpacking Light has no obligation to review this product to the manufacturer under the terms of this agreement.

Hyperlite Mountain Gear Windrider Backpack Review

A lower volume frameless pack constructed of a Cuben fiber/ripstop nylon laminate that’s cutting edge and raises the bar for frameless backpack elegance.

Hyperlite Mountain Gear Windrider Backpack Review - 1
The Hyperlite Mountain Gear Windrider pack is a cutting edge and versatile frameless backpack. Here I use it as a day pack while backcountry skiing.

Hyperlite Mountain Gear, a new small company making gear for ultralight backpacking, likes to be on the cutting edge, which definitely attracts our attention. I previously reviewed their Echo Modular Shelter System, which is innovative and highly versatile. Their Windrider pack is likewise well designed and versatile. It’s made of a Cuben Fiber/ripstop nylon laminate, which is unique and something I didn’t know even existed. As you will see in our Frameless Backpacks State of the Market Report 2011, there are a growing number of backpacks for ultralight backpacking, and most of them are highly refined. How does the HMG Windrider compare with the competition?

Specifications

Year/Model 2011 Hyperlite Mountain Gear Windrider (www.hyperlitemountaingear.com)
Style Frameless backpack with removable stays, top loading, drybag top closure with two side straps and one top compression Y-strap
Volume Size Large/Tall tested.
Specified volume: 2650 cubic inches (43 L) including pockets and extension collar
Measured volume: 2590 cubic inches (42 L)
Weight Manufacturer specification: 25.5 oz (723 g)
Stays weight: 2.1 oz (60 g)
Measured weight: 27.3 oz (774 g) with stays
Sizes Available Unisex S, M, L, Tall
Fabrics Pack body is 2.75 oz/yd2 (93 g/m2) Cuben Fiber/ripstop nylon hybrid fabric, front and side pockets are durable mesh
Features Wide padded hipbelt with two waterproof zippered pockets, mesh front and two side pockets with elastic binding, two compression straps each side, sternum strap, 7-in (18-cm) extension collar, drybag type closure and top compression Y-strap, one ice axe loop, one front tool loop, four front attachment buckles for accessory straps, haul loop, sewn-in backpanel foam pad, hydration sleeve and one hose port, double-reinforced flat bottom
Volume to Weight Ratio 95 in3/oz, based on 2590 in3 and measured weight of 27.3 oz (size Large/Tall)
Maximum Comfortable Load Carrying Capacity 30 lb (13.6 kg) estimated comfortable load for an average person carrying the pack all day
Carry Load to Pack Weight Ratio 17.5 (based on 30 lb load and a measured weight of 1.71 lb with stays)
MSRP US$255
Options Southwest version with Spectra Hardline exterior pockets (same weight and cost)

Description

The fabric used in the HMG Windrider is truly unique. It’s a Cuben Fiber/ripstop nylon hybrid weighing 2.75 oz/yd2 (93 g/m2), and that’s all they will tell me about it. The Cuben Fiber is on the inside and ripstop nylon on the outside. The pack is sewn together like a conventional frameless pack, rather than using adhesives as in a Cuben Fiber pack. The construction is very high quality.

Hyperlite Mountain Gear Windrider Backpack Review - 2
Close up of the HMG’s Cuben Fiber/ripstop nylon fabric. It’s a bit stiff, and it wrinkles and crinkles.

Hyperlite Mountain Gear Windrider Backpack Review - 3
Views of the HMG Windrider pack: The pack is a traditional style with a large mesh front pocket and two mesh side pockets (far left). The mesh used in the outside pockets is a coarse pattern and quite durable. A Southwest version of the pack with even more durable mesh pockets is available. The backpanel (second photo) is the pack fabric against your back. Each side (third photo) has a large mesh pocket and two compression straps. The top closure (far right) is a drybag type with two side straps and one top Y-strap.

Hyperlite Mountain Gear Windrider Backpack Review - 4
Frame and Suspension: the Windrider comes with two thin flat removable aluminum stays (left) that insert into sleeves on the inside of the pack’s backpanel. The backpanel has a sewn-in foam pad on the inside, plus a shallow hydration sleeve. Shoulder straps (upper right) are 2.75 inches (7 cm) wide, fairly stiff, and have 3D mesh on the underside. Hipbelt wings (right) are 4 inches (10 cm) wide, also fairly stiff, and also have 3D mesh on the inside.

Hyperlite Mountain Gear Windrider Backpack Review - 5
Features: Each hipbelt wing (above) has a large attached Dyneema ripstop pocket with a water resistant zipper.

Performance

Hyperlite Mountain Gear Windrider Backpack Review - 6
I tested the Windrider on fall and spring backpacking trips in the southern Rockies and southern Utah canyon country, as well as numerous winter day trips while backcountry skiing and snowshoeing.

Hyperlite Mountain Gear Windrider Backpack Review - 7
The Windrider pack is claimed to be waterproof, no pack cover required: so is it? I also noticed that the pack’s outside ripstop nylon layer absorbs water. So I decided to test the pack’s waterproofness and water absorption by soaking it in the bathtub for half an hour. When I lifted the pack out of the water and opened it up it had about a pint of water in the bottom, and the only way it could have gotten there is by soaking through the seams. I reweighed the pack after allowing it to drip for five minutes and found it had absorbed 11 ounces (312 g) of water. The outcome: the pack is not waterproof as claimed, so the Windrider needs a rain cover like any other pack. The pack’s padding and seam binding accounts for a lot of the absorbed water, but the fabric surface also absorbs quite a bit, certainly more than silnylon would.

Hyperlite Mountain Gear Windrider Backpack Review - 8
A nice feature of the Windrider is its flat bottom, so it stands up on the ground. Many packs readily fall over, which is annoying.

Hyperlite Mountain Gear Windrider Backpack Review - 9
The Windrider has two compression straps on each side and compresses down to half of its full volume, which is very good compared to other packs I tested. The front mesh pocket is fully accessible when the pack is compressed.

The measured pack torso length (size Large/Tall) by the BPL method (inside of shoulder strap to middle of the hipbelt) is 20.25 inches (51 cm), and 22.25 inches (57 cm) by the conventional manufacturer method (top of shoulder strap to bottom of the hipbelt). The Windrider is available in four torso lengths, and the tallest one (tested) ranks in the top three for long torso length; the Granite Gear Virga is the same, and the Gossamer Gear Mariposa and Six Moon Designs Traveler are slightly taller.

Our pack load carrying capacity tests show the Windrider will comfortably carry loads up to 20 pounds (9.1 kg) without stays and up to 30 pounds (13.6 kg) with stays. The Windrider ranked in the middle of six packs tested that have removable stays. Interestingly, the stays help support the pack quite well up to a 20 pound (9.1 kg) load, then collapse more beyond that weight (see Part 2B of this series for specific test results).

The aluminum stays in the Windrider weigh just 2.1 ounces/pair (60 g/pair), one of the lightest among the packs in our roundup that have removable stays. They are flat aluminum stays one-half inch wide and one-sixteenth inch thick (1.3 cm x 2 mm) that will hold a bend, but they are not rigid enough to resist deformation. In other words, they readily flex with the pack’s backpanel, and bend with heavier pack weights. In my opinion, the contoured tubular stay unit used in the Gossamer Gear, Elemental Horizons, and Six Moon Designs packs is better. Its contour can be customized and it’s more rigid to resist distortion with heavier loads.

In its defense, the Windrider is a smaller volume frameless backpack, which is not intended to carry heavy loads, so perhaps the stay system is adequate for the pack’s intended purpose. For the pack’s volume, a normal load of lightweight gear plus expendables would weigh between 15 and 25 pounds (6.8 to 11.3 kg), which is well within the pack’s comfortable carrying capacity. This agrees with my field testing, where I comfortably carried 22 pounds (10 kg) in the Windrider on a three-day backpack on the Boulder Mail Trail in Southwestern Utah.

Our pack volume measurement shows a close agreement with the pack’s specified volume; the specified volume is 2650 cubic inches (43 L), and our measurement is 2590 cubic inches (42 L).

The pack’s hydration sleeve appears to be too shallow, only 9.75 inches (25 cm) deep. However, when I put a filled 2.5-liter Platypus flask in the sleeve, the bottom of the flask is level with the shoulder strap seam, so it appears to be designed to place the weight as high as possible and make the flask as accessible as possible. The side mesh pockets are also tall enough to hold a hydration bladder.

Comparisons

Comparative specifications can be found in my Frameless Backpack State of the Market Report 2011 Part 3 (coming soon). The closest comparisons are the Mountain Laurel Designs Prophet, ZPacks Dyneema X 26, and Ultralight Adventure Equipment (ULA) CDT. The first two are about 10 ounces (283 g) lighter, and the third is only slightly lighter.

Assessment

Although I managed to find a few flaws, I want to emphasize that the Windrider is a very nice pack. It’s cutting edge, as far as materials, design, and construction. The fact that it’s not waterproof as claimed is really a non-issue because no backpack is waterproof unless the seams are taped, and taping seams is tedious and adds weight. The stay system is simple and lightweight, but it is not as robust as some of the other packs. Actually, it’s encouraging to see a 2650 cubic inch (43 L) frameless pack come with removable stays, because it reinforces our finding that stays improve a pack’s comfortable load carrying capacity for loads heavier than 15 pounds (6.8 kg). The stays that come with the Windrider weigh only 2.1 ounces per pair (60 g), so they add minimal weight to the pack while providing multiple benefits.

The Windrider is a smaller volume frameless pack in the “sweet spot” for ultralight backpacking. With a lightweight and compact gear kit, the Windrider is a perfect size for shorter three-season backpacking trips up to about four days. On the plus side, the Windrider is durable and very well designed and constructed. The main downside is that the Windrider is on the heavy side at 25.5 ounces (723 g). Most of its competitors weigh in the 12 to 20 ounce (340 to 567 g) range. It gets down to a basic question of: “does the extra weight equal extra comfort?” The answer is basically yes, but the next question is: “do I want extra comfort features in an ‘ultralight’ frameless backpack, or do I want it Spartan and also comfortable?” That’s a question that you will need to answer for yourself. It’s like deciding between a Lexus and a Prius. If you don’t mind an extra 10 ounces (283 g) of pack weight and extra cost, then the Windrider is a pack that you will be proud to own, and it will perform as well or better than its peers of similar size.

What’s Good

  • Excellent volume reduction system
  • Durable fabric and mesh
  • Removable stay system included, one of the lightest stay systems currently available
  • Excellent suspension system for a frameless backpack
  • Comfortably carries moderate loads
  • Large mesh front and side pockets for convenient access to items needed on the trail
  • Excellent construction, very sturdily built, with adequate reinforcements
  • Fits well (if you choose the correct size); four torso lengths available
  • Large hipbelt pockets included
  • Bottom is flat so pack stands up by itself
  • Hydration sleeve positions the weight higher and makes the reservoir more accessible

What’s Not So Good

  • Pack is not waterproof as claimed
  • Outer fabric absorbs water
  • Stays less supportive with heavy loads
  • At 25.5 ounces (723 g), the Windrider is on the heavy side compared to its competitors

Recommendations For Improvement

  • Offer a contoured tubular stay
  • Reduce the weight of the pack

Lightweight Frameless Backpacks State of the Market Report 2011: Part 1 – Choosing and Using a Frameless Pack

One of the most important items in an ultralight gear kit is a frameless backpack, and it’s important to do your research and choose wisely. This five-part manifesto on frameless backpacks (including those with removable stays) is based on two years of field testing and weeks of lab testing. We compile data on all of the packs currently available and evaluate them in groups according to their appropriate use. Part 1 focuses on the intricacies of selecting and using a frameless backpack and provides a master list of frameless backpacks that meet our selection criteria.

Overview – Frameless Backpacks State of the Market Report 2011

Much has changed since our last Frameless Backpack Review Summary published back in 2004 and our Superultralight Backpacks Review Summary published in 2006. Although the fundamentals remain the same, the number, diversity, and features available in frameless backpacks have greatly expanded. Our 2004 article contained just seven packs, and our 2006 article contained five packs. Today we have lots of choices, so it’s entirely possible to find exactly the pack you want in terms of fabric, sizing, volume, and features. The challenges are to determine exactly what you want and to find it.

A lightweight frameless backpack is a core component of a lightweight backpacking kit, whether you choose to travel superultralight (SUL, base weight less than 5 pounds/2.3 kg), ultralight (UL, base weight less than 10 pounds/4.5 kg), or lightweight (LW, base weight less than 20 pounds/9.1 kg). The base weight is everything but consumables (food, water, and fuel). Pack total weight with consumables for SUL backpacking should normally be less than 12 pounds (5.4 kg), less than 20 pounds (9.1 kg) for UL backpacking, and less than 30 pounds (13.6 kg) for LW backpacking. Stronger people can carry more, but most people prefer less. It’s best to keep weight under these limits if you expect to comfortably carry a frameless backpack. The guiding mantra is “less is better.”

Lightweight Frameless Backpacks State of the Market Report 2011: Part 1 – Choosing and Using a Frameless Pack - 1
Examples of frameless backpacks in the three use categories are the Gossamer Gear Murmur (left) for superultralight backpacking, the Mountain Laurel Designs Prophet for ultralight backpacking, and Six Moon Designs Starlite (right) for lightweight backpacking.

To carry a light load, all you need is a light pack, so a frameless backpack is the pack of choice for backpackers who’ve gone lightweight. Frameless backpacks have become very sophisticated and do their job well. However there is a great diversity of users, backpacking conditions, and specific needs and preferences. To accommodate such a diversity, manufacturers offer frameless backpacks with a wide range of volumes, weights, features, and load hauling capability. To cover the range of packs and uses, we divide the topic into five articles as follows:

Introduction to Part 1: Choosing and Using a Frameless Pack

Lightweight Frameless Backpacks State of the Market Report 2011: Part 1 – Choosing and Using a Frameless Pack - 2
Backpacking “enlightenment” is a complete ultralight gear kit weighing well under 20 pounds (9.1 kg) carried in an ultralight frameless backpack. Gossamer Gear Gorilla pack shown.

By definition, a frameless backpack lacks the support of a built-in internal frame. Today’s frameless backpacks are not just a bag with shoulder straps attached, i.e., a rucksack. Rather, they are highly refined for lightweight backcountry travel, a specialized piece of gear that requires the use of specialized techniques to attain its benefits. A frameless backpack is not for everyone, and hikers unwilling to adopt the proper usage techniques, or overload them, are not likely to be happy with a frameless backpack.

The classic frameless backpack consists of a rectangular main compartment, a large front mesh pocket, side mesh pockets, an extension collar, rolltop closure with top compression strap, padded shoulder straps, sternum strap, and most now have a padded hipbelt. This feature set has withstood the test of time, and the design of most frameless backpacks is some version of this fundamental feature set.

Also, some frameless backpacks have available (or included) removable stays or a removable rigid foam framesheet, which adds another dimension to the capability of these packs. With the stays installed, manufacturers claim these packs can comfortably carry heavier loads, but there are a few caveats to be aware of. Packs with removable stays are included in this state of the market report, and we will discuss the use and benefits of removable stays.

The successful use of all frameless backpacks is dependent on the protocols explained in this article (I can’t emphasize that enough!).

Backpackers who are lightening their pack and want to enter the unburdened world of ultralight backpacking should thoroughly read the following sections.

Creating a “Virtual Frame”

Successfully using a frameless backpack requires you to master certain packing protocols so the pack effectively transfers weight to the hips and carries a load comfortably. The pack needs to be properly loaded and compressed. A basic principle for using a frameless backpack is to create a “virtual frame” which provides frame-like rigidity in the backpanel. A virtual frame is created by the combination of:

  • Choosing a pack with volume that matches the volume range of gear plus expendables (food, water, and fuel) you commonly carry.
  • Coiling a closed cell foam (CCF) sleeping pad around the inside of the pack’s interior, or folding it and placing it against the pack’s backpanel.
  • Proper packing so higher density gear and food is against the mid and upper backpanel.
  • Tightening all compression straps so the pack is a firm unit.

The gist of this is that you want your pack to be stiffened as much as possible so it effectively transfers weight to the hips, increasing the comfortable load carrying capacity of the pack by reducing the weight carried on the shoulders. The importance of this technique increases with the amount of weight carried.

Lightweight Frameless Backpacks State of the Market Report 2011: Part 1 – Choosing and Using a Frameless Pack - 3
Coiled and folded closed cell foam pads. The pad in the photos is a MSR RidgeRest ¾-length. Which pad configuration is better? We evaluate that in Part 2B of this series.

A key factor in this equation is the use of a closed cell foam sleeping pad inside the pack to help attain stiffness. You can test it for yourself by packing your gear kit in a frameless pack with or without a folded CCF pad against the backpanel, then going on a short hike. The CCF pad makes a huge difference!

You may be thinking: “I don’t use a CCF pad anymore, I switched to a lightweight inflatable sleeping pad, so what do I do?” That’s a common conundrum when it comes to the virtual frame concept. You will find some good ideas in the next two sections.

Pack Compression/Volume Reduction

As mentioned, a good compression system is required to make the pack a firm unit. A superultralight backpack doesn’t need much of a compression system because it is usually stuffed tight and is very light. However ultralight and lightweight backpackers, who carry loads of varying volume and weight, need to choose a backpack with a good compression system.

Lightweight Frameless Backpacks State of the Market Report 2011: Part 1 – Choosing and Using a Frameless Pack - 4
Examples of pack compression/volume reduction systems: the Ultralight Adventure Equipment (ULA) CDT pack (left) has only one compression strap on each side that reduces pack volume only 27%; the Hyperlite Mountain Gear Windrider pack (center) has two compression straps on each side that reduce pack volume 50%; and the Equinox ARAS Eagle (right) has a robust bungie compression system around the pack that reduces pack volume 70%. Details of our pack volume reduction capability measurements are in Part 2A of this series.

I don’t particularly care for a bungie system on the front of a frameless backpack because it overlays the pack’s mesh pockets and interferes with access to the pockets. For compressing the pack to reduce volume and tighten the load, a bungie system works well, as long as the elastic cord is heavy enough and you compress the pack before you fill it. If you fill a pack before you compress it, a bungie system provides “soft” compression (it stretches more than it compresses), while webbing straps provide “hard” compression (no stretch).

My preferred volume reduction system is webbing compression straps on the sides of the pack. Two compression straps on each side are adequate for a smaller volume pack, and three compression straps per side are better for larger volume or taller packs.

Lightweight Frameless Backpacks State of the Market Report 2011: Part 1 – Choosing and Using a Frameless Pack - 5
GoLite frameless packs feature their ComPACKtor system on the bottom of the pack, consisting of a hook and loop which, when connected, reduces the volume of the main compartment substantially. Mountain Laurel Designs packs have a similar feature.

Lightweight Frameless Backpacks State of the Market Report 2011: Part 1 – Choosing and Using a Frameless Pack - 6
The volume-filling approach takes the opposite approach to pack compression to create a tight, firm backpack. Instead of reducing the volume of an oversize backpack, you fill some of that volume with a coiled partially inflated inflatable sleeping pad, then pack your gear inside the cylinder and tighten the pack’s compression system. It works nicely to coil the pad inside the pack, then inflate it to expand the pack. Alternatively, you can fold a partially inflated pad and place it against the backpanel. This technique results in a fully expanded pack, which may or may not carry as well as a compressed one.

Key points for pack compression/volume reduction:

  • This capability is more important when you choose a pack that is significantly larger than your gear kit, and for larger frameless packs in general.
  • A good compression system provides the means to firmly tighten the pack around its contents on three sides (top and two sides).
  • An excellent compression system has compression capability on all four sides, with two or three well placed compression straps on each side.
  • An elastic bungie system will effectively reduce pack volume, if you compress it before you fill it, but it interferes with access to the pack’s outside pockets.
  • An alternative to volume reduction is volume-filling, coiling a slightly inflated inflatable sleeping pad inside an oversize pack to take up volume.

Removable Stays

I chose to include packs with removable stays in this state of the market report because these packs are fundamentally frameless backpacks with an accessory consisting of sleeves on the inside of the backpanel that accept contoured flat or tubular stays. The purpose of the stays is to increase pack stiffness; they do not create an internal frame backpack because the stays are not solidly anchored to the hipbelt to directly transfer weight to the hips.

Lightweight Frameless Backpacks State of the Market Report 2011: Part 1 – Choosing and Using a Frameless Pack - 7
Some frameless backpacks have optional or included removable stays. They are either a contoured tubular stay like the one in the Gossamer Gear Gorilla pack (left) or contoured flat aluminum stays as used in the Six Moon Designs Traveler pack (right). Both slide into sleeves on the inside of the backpanel, and are not anchored to the hipbelt for direct weight transfer. Their main function is to increase pack stiffness, maintain pack torso length, and contour the pack to your back.

Some manufacturers claim their frameless backpack with stays inserted is capable of carrying loads up to 35 pounds (15.9 kg). There is a very important caveat to this; these packs are capable of carrying heavier loads if (and only if) the stays are used in combination with a confined folded closed cell foam pad against the backpanel. That combination can provide a significant boost in a pack’s comfortable weight carrying capacity, to 25 to 30 pounds (11.3 to 13.6 kg) in some cases. To the extreme, there are pack makers who claim their pack will comfortably carry 50 pounds (22.7 kg) (Mithril) or even 100 pounds (45.4 kg) (Kifaru), but let’s get real – for lightweight backpacking there is no reason to carry those outrageous loads, there is nothing comfortable about carrying 50 to 100 pounds (22.7 to 45.4 kg), and if you do there are better packs to help you manage the load. What they really mean is that if you can actually carry that weight, the pack will also carry that amount of weight without busting a seam!

Many hikers these days have switched to a lightweight inflatable sleeping pad, so they don’t have any need to carry a closed cell foam sleeping pad. How do you create a virtual frame without a closed cell foam pad? If a frameless pack has excess volume, a partially inflated inflatable pad can be coiled inside the pack to take up the excess pack volume, and our test results show that it can effectively create a virtual frame. However, a simpler and better approach is to select a properly sized frameless pack with removable stays to stiffen the pack; the stays basically provide the same function as a folded closed cell foam pad against the backpanel.

Do removable stays help you carry heavier loads more comfortably? The answer is a definite yes. In our measurements of pack torso collapse with different loads, reported in Part 2B of this series, we found that all packs that have removable stays will more comfortably carry a heavier load with the stays in, some better than others. But, again, it’s important to know that removable stays do not create an internal frame pack; they simply stiffen a frameless pack (just as a closed cell foam pad does to create a virtual frame) to help it resist pack torso collapse. And stays in combination with a CCF pad provide even more support. We also found that a confined rigid closed cell foam pad in the backpanel of some frameless packs (like the GoLite Peak, Jam, and Pinnacle) performs the same function.

Our tests of packs with and without stays support the conclusion that removable stays are a beneficial option and enhance the versatility of a frameless backpack. A high percentage of the packs in our roundup – even smaller volume packs – offer removable stays. As pack volume increases, the need for a supplementary removable stay system increases, so we feel that larger volume frameless backpacks should definitely include removable stays or at least offer them as an option. You may be thinking: “beyond a certain pack volume, why not simply use a lightweight internal frame backpack?” That’s an alternative, but there is still a weight penalty. Our tests show that the best larger volume frameless backpacks, with stays inserted, can match the comfortable load carrying capacity of a lightweight internal frame backpack, and the packs are significantly lighter.

Key points for removable stays:

  • For a small weight increase (less than 5 oz/142 g), removable stays add a lot of versatility to a frameless backpack.
  • Stays help to stiffen the pack; they don’t create an internal frame pack.
  • Stays in combination with a coiled or folded CCF pad significantly boost a pack’s comfortable load carrying capacity.
  • If you use an inflatable sleeping pad instead of a closed cell foam sleeping pad, stays compensate to stiffen the pack.
  • Backpanel stays help you carry loads heavier than 15 pounds (6.8 kg) more comfortably (see our testing results in Part 2B of this series).
  • Stays help maintain pack torso length.
  • Stays can be shaped to match the curvature of your back to improve pack fit.

Pack Volume

It’s ironic that we usually know the exact weight of our gear kit (we weigh everything, right?), but we don’t bother to measure the stuffed volume of our kit. And knowing the volume is a key factor in choosing the proper size backpack. It’s important to choose a frameless backpack that matches the volume range of your normal gear kit plus food, water, and fuel for a typical trip. The reason for this is explained in the paragraphs above; you want your pack to be full and firm, as much as possible, so it carries well. For example, I live close to a large wilderness area and go on frequent fast and light two- or three-day trips. My ultralight gear kit plus food ranges from 2500 to 3000 cubic inches (41 to 49 L) and 15 to 18 pounds (6.8 to 8.2 kg), so my preferred pack volume is in the 2500-3000 cubic inch (41 to 49 L) range.

For many ultralight backpackers, the “sweet spot” is about 2500 to 3200 cubic inches (41 to 52 L) of volume. A well thought out ultralight backpacking kit plus expendables for a shorter trip (up to four days) will easily fit into a pack at the lower end of that range. Gear for cooler temperatures and/or a longer trip will fit into a pack at the upper end of the range. Some thru-hikers prefer a backpack up to 3600 cubic inches (59 L) so they have the extra volume needed for occasional long hauls. The important factor here is higher volume packs used for ultralight backpacking need to have excellent compression capability so pack volume can be adjusted effectively for various size loads.

Many hikers are not consistent on trip type and length, and their pack load varies a lot. What then? The options are to own smaller and larger volume packs, or choose a pack at the high end of the ultralight backpack volume range (around 3500-3600 cubic inches/57-59 L) that has excellent compression capability (explained above) so pack volume can be adjusted as needed. I have tested both approaches, and I personally prefer multiple packs, but that’s more expensive. The latter option is quite workable, but it’s important to choose a pack with excellent compression capability.

A common mistake is to overestimate the pack volume needed, and consequently purchase a pack that is larger than you really need. Many hikers don’t really know the actual volume of their gear kit, and the volume is probably lower than they think. To avoid the mistake of choosing a pack that is too big (or small), I recommend that you actually measure the volume of your gear kit, as shown in the photos below.

Lightweight Frameless Backpacks State of the Market Report 2011: Part 1 – Choosing and Using a Frameless Pack - 8
A simple method to measure the volume of your gear kit. Shown at left is a typical ultralight gear kit for summer backpacking in the Rockies, where nighttime temperatures can get down to freezing. The total weight is 9 pounds (4.1 kg). To estimate gear volume, obtain a tall cardboard box such as the one pictured in the left photo, stuff your gear in the box as you would pack your backpack (center photo), measure the length, width, and height of the packed portion of the box, then calculate cubic inches by multiplying the three dimensions. The total for the gear kit shown is 2600 cubic inches (43 L). Theoretically, you should add about 100 cubic inches per day (1.6 L) for food, but that may not be necessary (as discussed below). The right photo shows the same gear packed into the ZPacks Dyneema X 26 backpack, which has a claimed total volume of 2600 cubic inches (43 L). All of the gear easily fits into the pack, with the entire extension collar empty, providing plenty of room for food.

I took this exercise a step further by packing the same gear kit (shown above) into the GoLite Peak pack, which is 2440 cubic inches (40 L) for size Large. Again, it all fit leaving the entire extension collar free. Since the extension collar on the Peak is smaller, there is only room for three or four days of food. The mesh outside pockets on the majority of these packs expand to hold a lot of gear, and I typically put at least a third of my gear in the outside pockets so it’s handy. Overall, it’s safe to say that most frameless backpacks will actually hold more volume than specified.

Key points for pack volume:

  • Don’t blindly choose a pack size!
  • It’s important to measure the volume of your typical gear kit.
  • The volume of your gear kit is probably smaller than you think.
  • Frameless backpacks often provide more room than their specifications would indicate.
  • Choosing a pack whose volume matches the stuffed volume of your gear kit is a good rule of thumb; there should be enough remaining volume for food for several days.

Okay, now that we have done our part to determine the pack volume we need, can we safely assume that manufacturer specified pack volumes are accurate? The short answer is no. It’s not as straightforward as it should be, because: 1) the volume sometimes varies with the pack size selected: 2) manufacturers vary in how they measure pack volume and what’s included: and 3) unfortunately, manufacturer volume specifications are inaccurate in many cases, as we find in Part 2A of this series. For some pack brands (for example, GoLite), the volume increases as the pack size increases, so there is about a 125+ cubic inch (2 L) difference between pack sizes. However, for many of the other manufacturers of frameless packs, the pack volume is the same for all pack sizes; they simply attach the shoulder straps higher or lower.

The variation in pack volume measurement methods among manufacturers makes it difficult for the buyer, because quite frankly the actual volume can vary substantially from the specified volume. In Roger Caffin’s Lightweight Internal Frame Backpacks State of the Market Report, he found that American made backpacks had 21.1% less volume than specified, which is quite significant. There is an ASTM standard and guidelines for measuring pack volume, using 20 millimeter hollow plastic spheres (essentially ping pong balls), but as Roger points out, there is quite a bit of variation in how the standard is applied (or not applied).

The situation for frameless backpacks is different. Most of the frameless backpacks in this roundup are made by American companies, and most are small businesses, so we would expect even more variation in the methods they use to determine pack volume. Many simply use pack dimensions to calculate volume, and there’s a lot of differences in whether outside pocket and extension collar volume is included or not. The de facto standard for frameless backpacks is to include all pockets and the extension collar in total pack volume, and itemize the volume of the pack components (main compartment, exterior pockets, extension collar). Ultralight and lightweight backpackers need to know these numbers, and the numbers need to be accurate. Unfortunately, that is not necessarily the case; our pack volume measurements reported in Part 2A of this series reveal some big discrepancies, indicating that frameless pack manufacturers need to adopt a consistent protocol and more accurately measure pack volume.

Proper Fit

The standard procedure to measure your torso length is as follows: have a friend measure your back along the spine from the level of your iliac crest (the top of your hipbones) to your C7 vertebrae (the knobby bone at the base of your neck). It helps to mark those spots with a pen or marker, then measure the distance. Most pack manufacturers have an illustration on their website to help you understand where to measure. If you are between two sizes, size up.

This assumes that you will wear a backpack hipbelt on your iliac crest (top of the hipbone). However, if you find it more comfortable to place a hipbelt either higher or lower, a pack should be fitted to your specific support points. For example, the top of my iliac crest has a steep angle, so wearing a hipbelt at the top of my iliac crest is too high, so I prefer to place the hipbelt lower, which means that my torso length is longer than the standard measure would indicate. Consequently, a size Large pack fits me better than a Medium. What doesn’t work is to choose a pack size based on the standard measure of user torso length, and then wear the pack either higher or lower than your iliac crest.

A proper fit, defined as the pack torso length matching the user torso length, is important for optimum pack performance. The hipbelt should wrap around the top of your hips, and the top of the shoulder straps should attach to the pack at the top of your shoulders. If a pack has load lifters, they should angle up to their pack attachment at a 45 degree angle. It’s okay for the pack torso length to be a bit more than the user torso length, but not less. The shoulder straps should not wrap over your shoulders and down to the pack attachment. The “wrap over the shoulders” fit may be acceptable for a day pack, but not for a backpack.

Lightweight Frameless Backpacks State of the Market Report 2011: Part 1 – Choosing and Using a Frameless Pack - 9
An example of a pack that is too short for the user – the pack torso length is less than the user torso length.

A pack that is too short (pack torso length less than the user torso length) results in pack lean-back, which is explained as follows. The proper procedure to put on a pack is to loosen the shoulder straps and hipbelt, put the pack on, tighten the hipbelt in its proper place, then tighten the shoulder straps (and load lifters if your pack has them). If the pack torso length is too short, tightening the shoulder straps will put much of the pack’s weight on your shoulders. After hiking a while, shoulder fatigue sets in and the remedy is to loosen the shoulder straps, which causes the top of the pack to lean back. This shifts pack weight to the hips and relieves shoulder discomfort, but the pack’s center of gravity is moved outward. Bottom line, this is not a proper fit and not the best way to carry a backpack, and can be avoided by purchasing the correct size pack in the first place.

Things I learned from testing backpacks for this article are: 1) the method manufacturers use to measure pack torso length can be misleading, 2) the actual pack torso length for a given pack size can vary significantly among manufacturers, and 3) an underfilled or overweighted pack can result in pack torso collapse, which amounts to a reduction of the pack’s torso length of at least one size.

Most manufacturers measure pack torso length from the top of the shoulder strap attachment to the bottom of the hipbelt. This is easy to measure, but (in my opinion) the resultant pack torso length comes out to be longer in relation to how user torso length is measured and how the pack is worn. In my opinion, a more meaningful pack torso length measurement would be from the underside of a shoulder strap to the middle of the hipbelt. Finally, the actual torso length of a given pack size can vary significantly among manufacturers. When I measured the actual torso length of all the size Large packs I tested, I found a rather wide range. The bottom line is to make sure a pack fits properly.

Key points for proper fit:

  • Measure and keep a record of your torso length.
  • Do your research and choose a pack that fits properly; it’s better to err on the tall side rather than getting a pack that is too short, which will put more weight on your shoulders.
  • An underfilled or overweighted pack can cause pack torso collapse, which reduces the pack’s effective torso length by one size or more (a Large becomes a Medium, for example).

Fabric Choices

Interestingly, there are no frameless backpacks made of spinnaker fabric in this roundup, probably because it has proved to be too fragile. Spinnaker fabric, weighing about 1 ounce per square yard (34 g/m2), was previously the lightest fabric available in a frameless backpack, for example the Gossamer Gear G5 and G6 Uberlight packs. Overall, frameless backpack fabrics have moved up a notch in durability. The lightest fabrics available now are Cuben Fiber, silnylon, and PU coated ripstop nylon. The first two are nearly equivalent in weight because a heavier, more durable version of Cuben Fiber (CTF3, 1.4 oz/yd2/47.5 g/m2) is required for a backpack. Pack manufacturers who use Cuben Fiber claim that it has much higher puncture and tear resistance than silnylon. According to Ron Bell at Mountain Laurel designs, silnylon warp tear strength is about 12 to16 pounds per square inch (0.8 to 1.1 kg/cm2) and Cuben Fiber CTF3 is 190 pounds per square inch (13.4 kg/cm2). The differences are demonstrated in this video by ZPacks:

Youtube video

Lightweight Frameless Backpacks State of the Market Report 2011: Part 1 – Choosing and Using a Frameless Pack - 10
Lightweight backpack fabrics. Cuben Fiber CTF3 (left) which weighs about 1.4 oz/yd2 (47.5 g/m2) is a non-woven laminate consisting of a grid of white Dyneema (Spectra) threads sandwiched between transparent polyester membranes. CTF3 has more than twice the spectra thread count of the thinner Cuben laminates, plus a double thick polyester membrane, making it the best choice for backpack construction. Dyneema fabric (center) is commonly a 0.25 inch (0.6 cm) grid of Dyneema (Spectra) fibers woven into 210 denier ripstop nylon, with coatings on both sides, weighing around 4 oz/yd2 (136 g/m2). Common silnylon (not shown) is silicone impregnated 30 denier ripstop nylon weighing around 1.3 oz/yd2 (44 g/m2). There are numerous variations of silnylon available, including a heavier 70 denier weight. Finally, common polyurethane coated ripstop nylon (right) is still a viable lightweight inexpensive fabric for backpacks; various weights are used in different parts of a pack but 1.8 to 2.2 oz/yd2 (61 to 75 g/m2) fabric in the pack body is a good balance of light weight and durability.

At the more durable end of the range are the Dyneema ripstop fabrics, which are basically a 210 denier ripstop nylon containing a grid of Dyneema fibers. Dyneema and Spectra are nearly identical; Dyneema is made by DSM in the Netherlands, and Spectra fiber is made by Honeywell in the United States. The difference among Dyneema fabrics is in the fabric weave and amount and orientation of Spectra contained. Manufacturers have assigned names like Dyneema Gridstop, Dyneema Ripstop, Dyneema Diamond, etc. to the fabrics. Dyneema X, exclusive to Mountain Laurel Designs and Thru-Hiker, is described as “4 oz/yd2 (136 g/m2) 210d Nylon with a white 210 Dyneema ripstop grid and 0.25-inch (0.6 cm) reinforcement at 0 and 90 degrees. The high Dyneema content equals 9% of total fabric weight. Each Dyneema thread is 15 times as strong as steel by weight. An additional X pattern of nylon overweave improves abrasion and tear resistance.”

Lightweight Frameless Backpacks State of the Market Report 2011: Part 1 – Choosing and Using a Frameless Pack - 11
The new Hyperlite Mountain Gear Windrider pack is made of a unique Cuben Fiber and ripstop nylon laminate. Fabric weight is 2.75 oz/yd2 (93.3 g/m2). The hybrid fabric allows the pack to be sewn rather than assembled using adhesives.

Fabric choice depends on how you will use the backpack. Silnylon and Cuben Fiber are the fabrics of choice for the lightest packs that will be used for superultralight or minimalist ultralight backpacking, where every ounce counts. For general ultralight and lightweight backpacking, I recommend the Dyneema ripstop fabrics because they are the best balance of light weight, durability, cost, and longevity. A Dyneema ripstop pack can last a lifetime, while a silnylon or Cuben Fiber pack has a limited lifespan. According to Joe Valesco at ZPacks, “Cuben Fiber eventually begins to fray from excessive sun exposure and general use. This is what limits the lifespan to 2500 to 3000 miles. You will likely have duct tape on some frayed areas by the end of a long thru-hike.” To illustrate the weight difference, let’s take an example: the basic ZPacks Blast 26 backpack (2600 cubic inches/43 L) weighs 7.4 ounces (210 g) when constructed of Cuben Fiber or Silnylon. The same pack constructed of more durable Dyneema X fabric adds 4.4 ounces (125 g), for a total weight of 11.8 ounces (335 g), which is still very light.

All this said, it still seems like we have not found the “perfect” fabric for an ultralight frameless backpack. Silnylon and Cuben Fiber don’t have the longevity, and 4 oz/yd2 (136 g/m2) Dyneema ripstop seems like overkill. It would be nice to have a 2 oz/yd2 (68 g/m2) Dyneema ripstop? Also, Invista is introducing a new UltraLite line of Cordura fabrics in the 30 to 100 denier range; perhaps we will start seeing those fabrics in ultralight frameless backpacks in the near future.

Key points for fabric choices:

  • Cuben Fiber used for backpacks is stronger than silnylon and weighs about the same, but you still pay a premium to get it. It makes the most sense for a superultralight pack.
  • Dyneema is a good balance of light weight, durability, cost, and longevity. A pack made of Dyneema ripstop is recommended for general ultralight and lightweight backpacking.

Which Features?

Nowadays a full range of options is available, so with some research you can find exactly what you want. The choices range from a minimalist pack with very lightweight or removable features, to a full-featured durable pack, or one where you can select your desired fabric and features ala carte. Many packs are a predetermined design (e.g., GoLite and Gossamer Gear), where the manufacturer has optimized the pack with a tested feature set they perceive will satisfy the majority of hikers. Other manufacturers (e.g., Mountain Laurel Designs and ZPacks) offer a basic pack design with your choice of fabric and additional features. And these companies are masters at designing features and accessories that are very lightweight and removable, so it’s entirely possible to configure a pack to your liking and still hold the weight down to 15 to 20 ounces (425 to 567 g).

Lightweight Frameless Backpacks State of the Market Report 2011: Part 1 – Choosing and Using a Frameless Pack - 12
The time tested traditional frameless backpack feature set consists of a rolltop closure, front and side mesh pockets, hipbelt, and sternum strap. Gossamer Gear Mariposa Plus pack shown.

It all gets down to personal preference. While reading reader’s comments, I notice a full spectrum of individual preferences. Two schools of thought are the “clean design” and the “functional design.” The clean design eliminates outside pockets and accessories that can get shredded over time, but requires taking the pack off to access needed items. A functional design includes the traditional front and side mesh outside pockets, hipbelt pockets, and even shoulder strap and sternum strap pockets, to accommodate a “do it on the fly” philosophy for maximum convenience. I subscribe to the latter philosophy because I want to access things on the go, and I am gentle on gear, but I realize that there are many people and hostile conditions that are hard on gear, requiring the former approach.

Obviously durable fabric and features add weight, and it is up to the buyer to evaluate the weight/benefit tradeoffs and decide which pack and options best meet his or her needs. This is an important decision because, after all, frameless backpack users are ultralight backpackers and every ounce matters. We are always confronted with weight versus benefit decisions and our objective is always to minimize weight while getting in as many benefits as possible. If you get carried away with adding features, you can be accused of thinking like a lightweight backpacker (sorry for the jab there!), who has a hard time doing without gadgets, features, and comfort/convenience items.

Key points for features:

  • Do your research and decide which features you really need or want (there’s a difference between the two).
  • Think of features in terms of weight and functionality, not art.
  • Every ounce matters.
  • Choose carefully.
  • Once you buy it, the shopping is done, and you own it.

Proper Packing

Most of the above factors come together in this section. Properly packing a frameless backpack (or one with removable stays) is important, and it needs to be taken seriously. How you pack determines how well a pack fits and how comfortably it carries a load.

Here’s the drill:

  • Size up how much room your load will require in your pack. If it will fill it up completely, good; if it’s smaller than the pack volume, compress the pack first to reduce its volume. The goal is to fill the pack so it is firm and filled to about 2 to 3 inches (5 to 8 cm) above the shoulder strap attachment.
  • Coil your foam or inflatable sleeping pad inside the main compartment, or alternatively fold it and place it against the backpanel (my preferred method).
  • If you have excess volume in your pack, you have two options: 1) tighten the compression straps and then load the pack; or 2) if you use an inflatable sleeping pad, partially inflate the pad inside the pack to use up volume.
  • Pack your gear inside the coiled pad, placing denser/heavier gear and food against the backpanel in the upper two-thirds.
  • Pack soft gear around hard items to stabilize them and keep them from rattling against each other.
  • Again, be sure to load the pack into the extension collar about 2-3 inches above the shoulder strap attachments. If you don’t make it, start over, or get it right next time. A tall firm pack is better than a short soft one.
  • Snug down all compression straps.

This creates a firm pack with a virtual frame that carries well and will more readily transfer weight to the hips. The whole packing process, and the result, is better if you use a pack whose volume matches the volume of your gear plus food. The extra pack volume for longer trips should be the remainder of the extension collar.

Lightweight Frameless Backpacks State of the Market Report 2011: Part 1 – Choosing and Using a Frameless Pack - 13
These photos illustrate a key point in regard to proper pack sizing and packing. The left photo shows a frameless pack (Mountain Laurel Designs Exodus) firmly packed 2 to 3 inches (5 to 8 cm) above the shoulder strap attachment. The right photo shows the same pack underfilled to below the shoulder strap attachment causing pack torso collapse at the top of the pack. The top of the pack bends below the shoulder strap attachment point, which effectively shortens the pack’s torso length, which in turn compromises pack fit. It’s better to reduce pack volume so the pack firmly fills above the shoulder strap attachment. A tall slender pack fits and carries better than a short squatty shape.

Key points for proper packing:

  • Matching pack volume with gear volume greatly simplifies the packing process; simply load your pack and you’re good to go.
  • If pack volume is greater than gear volume, you need to use the pack’s compression system to reduce pack volume before you load it, or alternatively fill the extra volume by partially inflating a sleeping pad.
  • Follow the steps above to properly load the pack.
  • It’s important to load the pack 2 to 3 inches (5 to 8 cm) above the shoulder strap attachment to avoid pack torso collapse at the top.

What Really Matters

A frameless backpack is just one item in an ultralight backpacking kit. A lot of effort is required to plan such a kit that meets all of your needs and is still very lightweight (base weight under 10 pounds/4.5 kg). It’s important that your backpack matches your kit in terms of volume, features, and weight carrying capacity. Never choose a frameless backpack, even one with removable stays, if your base weight is over 20 pounds (9.1 kg) or total weight is normally over 30 pounds/13.6 kg. To comfortably carry those loads, you need a lightweight internal frame backpack.

Although most “enlightened” backpackers would argue for “the lighter the better,” there is room for pragmatism here. For me, I am a happy hiker if my total pack weight is under 16 pounds (7.3 kg). I really don’t notice the weight of my pack up to that point, but I progressively do notice it above that threshold. Glen Van Peski would not agree with this!

Finding the ideal frameless backpack gets down to doing a lot of research, evaluating the options, and making a wise decision. My experience from using a frameless backpack for over 13 years, reading numerous forum comments, and testing numerous frameless backpacks is that everyone’s perspective, situation, and needs are different, and everyone needs to make their own personal decision on which pack to buy. To help with that decision, in the sections ahead I provide comparative specifications for all of the packs included in this state-of-the-market report, and evaluate them in Parts 3 and 4 of this article.

Selection Criteria

This state of the market report focuses on frameless backpacks larger than 2000 cubic inches (33 L), which are suitable for superultralight, ultralight, and lightweight backpacking. The roundup also includes some larger volume backpacks capable of carrying large volume/moderate weight loads. I also include packs with optional removable stays, and comment on the functionality of the stays.

Overall, the selection criteria are fairly simple:

  • Currently available.
  • Frameless, nothing stiffer than closed cell foam in the backpanel.
  • Pack volume greater than 2000 cubic inches (33 L).
  • Pack volume to weight ratio greater than 80 in3/oz (138 cm3/g), based on manufacturer provided volume and weight data.
  • Packs with removable stays are included and evaluated with and without the stays.
  • Packs for specific uses other than backpacking (like climbing and adventure racing) are not included.

Specifications

The following table contains (in alphabetical order by manufacturer) specifications for all of the frameless backpacks included in this state-of-the-market report. For comparability, the weight of packs that have removable stays is for the pack only, without the stays. In subsequent articles in this series, the packs are divided into three groups, based on total volume, for superultralight, ultralight, and lightweight backpacking.

Pack Gender1 Torso
Sizes
Removable
Stays or
Rigid
Foam
Backpanel
Fabric Volume2 in3 (L) Mfr. Weight3
oz (g)
Volume/Weight
Ratio4
in3/oz
(cm3/g)
Cost (US$)
Elemental Horizons Aquilo U S,M,L Yes 70d 1.9 oz/yd2 PU coated ripstop nylon 2700 (44) 31.5 (893) 86 (148) 180
Equinox Pamola U One Size   30d Silnylon 2475 (41) 24.0 (680) 103 (178) 110
Equinox ARAS Eagle U One Size   30d Silnylon 3200 (52) 20.8 (590) 154 (89) 129
Equinox Katahdin U One Size   30d Silnylon 3350 (55) 26.0 (737) 129 (223) 110
GoLite Peak U S,M,L Yes 210d Dyneema Gridstop 2200 (36) 26.0 (745) 85 (49) 125
GoLite Jam M, W M’s S,M,L
W’s S,M,L
Yes 210d Dyneema Gridstop 3050 (50) 29.0 (840) 105 (61) 150
GoLite Pinnacle M, W M’s S,M,L
W’s S,M,L
Yes 210d Dyneema Gridstop 4392 (72) 32.0 (930) 137 (79) 175
Gossamer Gear Murmur U One Size   30d Silnylon 2200 (36) 8.1 (231) 272 (157) 90
Gossamer Gear G4 U S,M,L   70d 2.2 oz/yd2 PU coated ripstop Nylon 4000 (66) 16.5 (468) 242 (140) 125
Gossamer Gear Gorilla U S,M,L Yes 210d PU coated ripstop nylon 2800 (46) 19.8 (561) 141 (82) 180
Gossamer Gear Mariposa Plus U S,M,L Yes 70d 2.2 oz/yd2 PU coated ripstop Nylon 3600 (59) 18.9 (536) 191 (110) 170
Granite Gear Virga U S,M,L   70d ripstop Nylon 3200 (52) 19.0 (540) 168 (97) 110
Hyperlite Mountain Gear Windrider U S,M,L,Tall Yes Cuben Fiber + ripstop nylon hybrid 2650 (43) 23.4 (663) 113 (65) 255
Kifaru KU3700 U Custom Yes Proprietary Silnylon 3700 (61) 41.0 (1190) 90 (156) 518
Kifaru KU5200 U Custom Yes Proprietary Silnylon 5200 (85) 45.0 (1270) 116 (200) 558
Laufbursche huckePACK5 U S,M,L,XL   210d Dyneema X 3100 (51) 14.3 (404) 217 (125) 276
Laufbursche huckePACK5 U S,M,L,XL   1.7 oz/yd2 (58 g/m2) Cuben Fiber CTF3 3100 (51) 11.8 (335) 263 (152) 284
Laufbursche huckePACK5 U S,M,L,XL   210d Dyneema X 3600 (59) 14.7 (416) 245 (142) 276
Laufbursche huckePACK5 U S,M,L,XL   1.7 oz/yd2 (58 g/m2) Cuben Fiber CTF3 3600 (59) 12.0 (341) 300 (173) 284
Laufbursche huckePACKchen5 U One Size   210d Dyneema X 2380 (39) 10.6 (300) 225 (130) 213
Laufbursche huckePACKchen5 U One Size   1.7 oz/yd2 (58 g/m2) Cuben Fiber CTF3 2380 (39) 7.6 (215) 313 (181) 216
Moonbow Gear Mithril6 U S,M,L,
Custom
  30d Silnylon 3000 (49) 16.5 (468) 182 (315) 220
Mountain Laurel Designs Burn U S,M,L   210d Dyneema X 2300 (38) 9.8 (278) 235 (136) 139
Mountain Laurel Designs Prophet U XS,S,M,L   210d Dyneema X 2900 (48) 14.5 (411) 200 (116) 180
Mountain Laurel Designs Prophet U XS,S,M,L   1.4 oz/y2 (47 g/m2) Cuben Fiber CTF3 2900 (48) 7.0 (198) 414 (240) 195
Mountain Laurel Designs Exodus U S,M,L   210d Dyneema X 3500 (57) 15.0 (425) 233 (135) 185
Mountain Laurel Designs Ark U M,L   210d Dyneema X 4400 (72) 17.5 (496) 251 (145) 195
Rodney’s Packs7 U S,M,L,
Custom
  Varies Varies Varies Varies Varies
Six Moon Designs Swift U M,L Yes 210d Dyneema Diamond 3400 (56) 15.0 (425) 227 (131) 110
Six Moon Designs Starlite U Adjustable Yes 210d Dyneema Diamond 4200 (67) 24.0 (680) 175 (101) 180
Six Moon Designs Traveler U Adjustable Yes 210d Dyneema Diamond 3800 (62) 26.0 (737) 146 (85) 185
Ultralight Adventure Equipment CDT U S,M,L   210d Dyneema Gridstop 3610 (59) 17.0 (482) 212 (123) 135
ZPacks Blast 20 U S,M,L Yes Cuben Fiber CTF3 2000 (33) 6.8 (193 ) 294 (170) 175
ZPacks Blast 26 U S,M,L Yes Cuben Fiber CTF3 2600 (43) 7.4 (210 ) 351 (203) 185
ZPacks Blast 32 U S,M,L Yes Cuben Fiber CTF3 3200 (53) 7.8 (220 ) 410 (237) 195
ZPacks Dyneema X 20 U S,M,L Yes 210d Dyneema X 2000 (33) 10.9 (310) 184 (106) 175
ZPacks Dyneema X 26 U S,M,L Yes 210d Dyneema X 2600 (43) 11.8 (335) 220 (127) 185
ZPacks Dyneema X 32 U S,M,L Yes 210d Dyneema X 3200 (53) 12.6 (357) 254 (147) 195
ZPacks Zero 20 U S,M,L Yes Silnylon 2000 (33) 3.1 (88) 645 (373) 55
ZPacks Zero 20 U S,M,L   Cuben Fiber CTF3 2000 (33) 3.1 (88) 645 (373) 85
ZPacks Zero 20 U S,M,L   Dyneema X 2000 (33) 7.0 (198) 286 (165) 85
ZPacks Zero 26 U S,M,L Yes Cuben Fiber CTF3 2600 (43) 3.5 (99) 743 (429) 95
ZPacks Zero 26 U S,M,L Yes Dyneema X 2600 (43) 7.8 (221) 333 (193) 95

Footnotes:

1 M=Men’s, W=Women’s, U=Unisex.

2 Manufacturer specified total volume for size medium, including outside pockets.

3 Manufacturer specified weight is used for comparison because we were not able to obtain all of the packs and weigh them. For packs with removable stays, weight listed is without stays.

4 Derived by dividing pack volume by pack weight, this value indicates how efficiently a manufacturer has selected materials to reduce weight. A high value indicates very lightweight materials and fewer accessories. Also, larger volume packs generally have a higher volume to weight ratio.

5 Laufbursche (a small company in Germany) is currently (April 2011) accepting pre-orders for their packs, and expects to fully open for business by the time this article publishes. Listed prices for their packs are converted to US Dollars as of April 2011.

6 The Mithril pack is designed by Dr. George Cole at Kiskil Outdoor and manufactured by Moonbow Gear.

7 Rodney’s Packs (a small company in the Philippines) sells frameless packs in a variety of designs, either pre-made and posted for sale on his website (http://www.freewebs.com/litepacks/), or custom packs to buyer’s specifications.

Specifications Discussion

There are a total of 43 backpacks listed in the table, nearly four times as many as our previous roundups combined. All of these packs can potentially be used for superultralight, ultralight, or lightweight backpacking, but some are more suited than others. Note that the ZPacks Zero packs are stuffsack packs intended for superultralight backpacking – a stuff sack with shoulder straps; the addition of outside pockets or other accessories adds weight.

Two-thirds of the backpacks are mid-size (2400 to 3600 cubic inches/39 to 59 L), appropriate for ultralight backpacking, which makes sense since that is the most popular use. However, when I measured the volume of the packs I tested, there were a few surprises (read Part 2A for details), which resulted in some “midsize” packs being moved into the “larger volume” category, which is more suitable for lightweight backpacking.

The popular Granite Gear Vapor Trail is sometimes mistaken to be a frameless backpack. It does in fact have an internal frame consisting of a HDPE plastic framesheet plus a closed cell foam pad that is sewn-in and not removable. The Vapor Trail is now discontinued, but will be replaced by the Vapor Trail 2 in spring 2012. The new Vapor Trail 2 will resemble the current Blaze pack, will weigh about 2 pounds (0.9 kg), and will possibly have a removable framesheet.

Another source of frameless backpacks is Rodney’s Packs (http://www.freewebs.com/litepacks/index.htm). Rodney Liwanag, located in the Philippines, makes custom frameless backpacks utilizing numerous designs and fabrics. He often sews up a batch of packs of various designs and displays them for sale on his website. His packs are not included in subsequent parts of this report because he does not have any standard packs. Most of his packs are traditional designs; one of particular interest is his scaled down “Gossamer Gear G4-like” pack with 3000 cubic inches (49 L) of volume.

Fanatic Fringe appears to be out of business. We will miss their lightweight and inexpensive Alpine Trail pack for superultralight backpacking and Thompson Peak Pack for ultralight backpacking.

Notice the large number of frameless packs that have optional or included removable stays. As discussed earlier, this low-cost feature provides some distinct benefits, and adds more versatility to a frameless backpack. Our torso collapse tests in Part 2B of this series reveal that removable stays significantly improve a pack’s comfortable load carrying capacity, leading to the conclusion that removable stays should be an option on all larger capacity frameless backpacks.

The table also includes some large volume packs, for example the GoLite Pinnacle and Kifaru packs, which I call load haulers. These packs go beyond the volume actually needed for lightweight backpacking. I include them with packs suitable for lightweight backpacking in Part 4 and discuss their pros and cons. There is a point where it simply makes sense to purchase a lightweight internal frame backpack, or not, and I discuss that conundrum in Part 4.

Preview to Parts 2, 3, and 4

As you can see from the specifications table, there is a wide range of frameless backpacks differing mainly in volume, fabric, and weight. To compare them in this “bulk” listing would be totally meaningless, like comparing apples, bananas, and grapefruit. So, they will be divided into appropriate use categories based on their volume and weight. In Parts 2A and 2B of this state-of-the-market report, our technical evaluation of a group of thirteen packs provides a basis for separating the packs into appropriate groups based on use, and provides data for performance rating the packs. In Part 3 we focus on packs suited for ultralight backpacking, presenting appropriate background, specifications, ratings, and picks for specific situations and needs. In Part 4 we do the same for lightweight frameless backpacks.

Ultralight Adventure Equipment (ULA) CDT Backpack Review

The CDT is a really nice frameless backpack that would be even better with a few revisions. And there is one thing you really need to know…

Introduction

Ultralight Adventure Equipment (ULA) CDT Backpack Review - 1
Ultralight Adventure Equipment (ULA) CDT on a late summer backpack in the Southern Colorado Rockies.

The CDT is a frameless backpack with durable fabric, lots of features and included accessories for a great value. It sounds like the perfect pack, and it almost is, but there’s one thing you really need to know.

Specifications

Year/Model 2010 Ultralight Adventure Equipment (ULA) CDT (http://www.ula-equipment.com)
Style Frameless backpack, top loading, drawcord closure with top compression strap
Volume Size M/L tested.
Specified volume: 3610 cubic inches (59 L) including pockets and extension collar
Measured volume: 2700 cubic inches (44 L)
Weight Measured weight: 20 oz (567 g)
Manufacturer specification: 17 oz (482 g);
Weight of included accessories: 3.8 oz (108 g)
Sizes Available Unisex S/M, M/L
Fabrics Pack body is 210d Dyneema Gridstop, outside pockets are stretch nylon
Features Sternum strap, large front stretch nylon pocket, 2 side stretch nylon pockets with drawcord closure,
2 hipbelt pockets, 1 compression strap each side, 8.5 in (22 cm) extension collar, drawcord closure
and top compression strap, 2 tool loops, 2 ice axe loops, haul loop, removable backpanel foam pad,
removable hydration sleeve with 2 ports, removable mesh security pocket, removable hand loops,
removable water bottle loops on shoulder straps
Volume to Weight Ratio 135 in3/oz (based on 2700 in3 and measured weight of 20 oz (size M/L)
Maximum Comfortable Load Carrying Capacity 25 lb (11.3 kg) estimated comfortable load for an average person carrying the pack all day
Carry Load to Pack Weight Ratio 20 (based on 25 lb and a measured weight of 1.25 lb)
MSRP US$135
Options Two hipbelt lengths, two shoulder strap shapes

Description

The CDT is a likeable pack, but there is one thing you need to know right up front: although the specified volume of the CDT is 3610 cubic inches (59 L), the measured volume is only 2700 cubic inches (44 L). That’s 910 cubic inches/15 L (25%) smaller than specified. Both volumes include the extension collar and all pockets. The actual volume (2700 cubic inches/44 L) is a nice volume for many ultralight backpackers; but the key point is that the CDT is a smaller volume pack than specified.

Ultralight Adventure Equipment (ULA) CDT Backpack Review - 2
Views of the ULA CDT pack: The frontpanel (far left) has a tall stretch nylon pocket that holds a lot of gear. The backpanel (second photo) is fabric against your back. Each side (third photo) of the pack has a sharply angled stretch nylon pocket and one compression strap. The bottom of the pack is tapered in. The CDT has a short extension collar with drawcord closure and one top compression strap (far right).

Ultralight Adventure Equipment (ULA) CDT Backpack Review - 3
Suspension system: Shoulder straps (left) and hipbelt are wide and well padded. Two shoulder strap shapes are available: an S-curve shape or J-curve (shown in center photo). The shoulder straps attach to the outside bottom of the pack (right), which helps to lift the pack.

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Features: The stretch nylon side pockets (top left) on my sample pack are sharply angled and have a drawcord closure. A number of useful accessories are included with the pack (upper right): a removable security pocket, hydration sleeve, and handloops. Hipbelt pockets (bottom left) are also standard, as are water bottle loops on both shoulder straps (bottom right).

Performance

Ultralight Adventure Equipment (ULA) CDT Backpack Review - 5
Late fall backpack in the southern Colorado Rockies carrying 22 pounds (10 kg) in the CDT.

Once I understood and accepted the fact that the CDT is a smaller volume pack than expected, (see previous section) I found it more likeable because I prefer a smaller volume pack. For a compact ultralight gear kit, the CDT has the right amount of room for a three- to five-day backpack.

The CDT has five outside pockets which hold a large amount of gear. The front and side pockets are stretch nylon, which is really nice, and hipbelt pockets are included. One drawback on my test pack is the side pockets are very angled – essentially a half pocket – so things can easily fall out. When I contacted ULA about the issue, they responded that many hikers had complained about that, so the pocket shape has been modified.

One other drawback of the CDT is its small extension collar. It doesn’t add much reserve volume to the pack for when you need it, and there is no extra length to roll the top down. Consequently there is a hole in the top where rain can enter (see top view above). The extension collar measures 8.5 inches (22 cm); 12 inches (30 cm) would be much better.

The CDT comes with a bunch of included accessories: removable elastic water bottle holders on both shoulder straps, handloops, removable hydration sleeve, and removable zippered mesh security pocket. Overall, the CDT is a great value considering its durable dyneema fabric, comfortable suspension, and included features and accessories.

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Clip on handloops (0.8 ounce/3 g per pair) come with the CDT. They provide a handy place to hang your hands on the trail (if you don’t use trekking poles) and take a bit of weight off the shoulders.

The pack I tested is a size M/L; the pack torso length measures 18 inches (46 cm) by the BPL method (inside of a shoulder strap to the middle of the hipbelt) and 20.5 inches (52 cm) by the conventional manufacturer method (top of shoulder strap to bottom of hipbelt). This comes out to about a size Medium +, so the CDT is not a good choice for taller hikers. My torso length is 20.5 inches (52 cm), and the CDT is a bit short for me, as shown in the photos.

The CDT is designed to hug the back and it has a comfortable suspension system. The bottom of the shoulder straps connect to the bottom rear of the pack, which helps to lift the pack. Consequently, in my torso collapse tests to measure pack load carrying capacity, the CDT did better than many of its frameless competitors, carrying up to 25 pounds (11.3 kg) comfortably.

Ultralight Adventure Equipment (ULA) CDT Backpack Review - 7
The CDT has only one compression strap on each side, which creates an hourglass shape when drawn. The single pair of compression straps do not reduce pack volume very much, only a 27% reduction by my measurements. Another compression strap on each side would help a lot.

Comparisons

Comparative specifications can be found in my Frameless Backpack State of the Market Report 2011. The closest comparisons are the Zpacks Dyneema X 26, Gossamer Gear Gorilla, Hyperlite Mountain Gear Windrider, Six Moon Designs Swift, and GoLite Jam.

Assessment

With a few revisions, the CDT would be high on our list of favorite frameless packs. The sharply angled side pockets, needed compression straps, and short extension collar are easily corrected, and of course the volume needs to be accurately stated. Its actual volume (2700 cubic inches/44 L) is right in the sweet zone for ultralight backpacking, it has a comfortable suspension, it has a great feature set, it carries a decent load, and it’s a great value.

What’s Good

  • Durable fabrics and mesh
  • Comfortable suspension system
  • Comfortably carries moderate loads
  • Large stretch nylon front pocket and side pockets for convenient access to items needed on the trail
  • Lots of features and included accessories
  • Excellent construction, very sturdily built, with adequate reinforcements
  • Fits well (if you choose the correct size)
  • Excellent value

What’s Not So Good

  • Volume is way under specification
  • Gear falls out of side pockets (corrected in current version)
  • Extension collar is too short
  • Torso length for size M/L is on the short side, so this is not a good pack for taller people

Recommendations For Improvement

  • Accurately state the pack volume
  • Add 4 inches (10 cm) to the extension collar
  • Add one more compression strap to each side
  • Make the side pockets taller with a less angled opening (this has been implemented in the current version)
  • Offer a true size Large

Disclosure: The manufacturer provided this product to the author and/or Backpacking Light at no charge, and it is owned by the author/BPL. The author/Backpacking Light has no obligation to review this product to the manufacturer under the terms of this agreement.

Big Sky International Evolution 2P Tent Review

Creation vs Evolution: one of the thorniest questions ever and one I prefer to stay away from most of the time. But Bob Molen’s latest creation is the ever-evolving Evolution 2P, and one I feel comfortable tackling. It is almost divine…

Big Sky International Evolution 2P Tent Review - 1

Introduction

With a total listed weight of 2.79 lb (1.27 kg), the Evolution 2P is Big Sky International’s lightest freestanding double-wall two-person tent. It is very close to being the lightest tent of the ones we looked at for the latest State of the Market Report, yet still has two full doors and vestibules, something the very lightest models did not. What trade offs were made to achieve this weight and how did it do in the field? Read on.

Specifications
Year/Manufacturer/Model 2010 Big Sky International Evolution, Two Person Tent
Style Three-season, two-person, double-wall tent.
Fabrics Body: 20D nylon mesh
Floor: SuprSil nylon
Fly: SuprSil nylon
Poles and Stakes Poles: Aluminum poles, 12.3 oz (349 g) Carbon fiber poles 9.4 oz (286 g)
Stakes: none sent. I used eight 0.4-oz (11-g) Ti shepherd’s hook stakes
 Dimensions Claimed Length: 84 in (213cm)
Claimed Width, foot/head: 46/56 in (117/142 cm)
Claimed Inside Height: 42 in (107 cm)
Measured Length: 82 in (208 cm)
Measured Width: 45/54 in (114/137 cm)
Measured Inside Height: 45 in (114 cm)
Packed Size 6 x 18 in (15 x 46 cm)
Total Weight Claimed Weight: 2.79 lb (1.27 kg)
Measured Weight: 2.76 lb (1.25 kg)
BPL Trail Weight: 2.77 lb (1.26 kg), w/ two stakes
Protected Area Floor Area: 28.2 ft2 (2.62 m2)
Vestibule Area: 16.6 ft2 (1.54 m2)
Protected Area/Trail Weight Ratio 16.17 ft2/lb (3.3 m2/kg)
MSRP US $399.90 (as received w/ ultralight fly)
Options Different flys, some with windows and porch, footprint, DuraLite CF poles,
assorted stakes, stuff sack.
Website www.bigskyinternational.com

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Views of the Evolution 2P. Top: Two standard pads fit with no problem. Bottom: The fly provides ample protection from the elements and a nice wind shedding shape.

Design and Features

The newest revision of the Evolution 2P from Big Sky International is quite different from last year. While still retaining the basic crossed-pole design, the nylon mesh body now attaches to the poles with 18 clips instead of pole sleeves. The poles go into grommets at the end of straps at the corners. The narrower foot end has red nylon at the grommets to quickly identify it. Set-up is very fast and easy.

The Evolution has a good sized D-shaped door on each side. As the tent is wider at the front, both doors open the same direction, and it is not meant for a head-to-foot sleeping configuration seen on many 2P tents. (And one I could never understand myself. I don’t like being kicked in the face all night.) Each door has a loop and toggle to keep it gathered and out of the way when so desired. Toward the head end of each door is a small gear pocket. On the other side of each door is a very large mesh pocket that Big Sky calls clothes hampers which are meant to be able to dry damp items.

Big Sky International Evolution 2P Tent Review - 3
Top left: Two vents at the top of the fly help provide air movement. Top right: The fly attaches to a loop of elastic cord. Bottom: Storage pockets abound with clothes hamper (left) and smaller gear pocket (right) at the sides of each door.

One nice touch on the inner tent is the way the bathtub floor comes up higher at the head of the tent. The 13-inch (33-cm) high tub at that point protects the users’ heads from wind blown rain and dirt.

The fly that I received is their Ultralight SuprSil-UL version, the lightest option. It too has red nylon at the narrow end. The fly attaches to the tent by means of a plastic hook that clips to a plastic ring on a loop of elastic cord. There is no way to tension the fly any more than the elastic gives.

Now, about the fabric. I asked for any information that I could share and Big Sky said that at this point the material is proprietary. Here is what they have to say about it. “SuprSil-UL fabric: used in Big Sky’s ultralight fly/shell, weight compares with spinnaker fabric, but about 50% more waterproof than generic silnylon or 4x more waterproof than spinnaker, and has tear strength 50% more than generic silnylon or 4x more than spinnaker.”

A single stake is used to pull the fly out from each side to create the entry vestibules. The vestibules have plenty of room for a pack and shoes to one side while still allowing unhampered entry and exit. At the top of each vestibule is a vent that can be propped open with a strut or kept closed with a patch of hook-and-loop. The vents can be adjusted easily from inside. More ventilation can be had by pulling out the fly at the guy points centered at the bottom of each end. For added strength there are hook-and-loop attachment points inside the fly that wrap around the poles. A guy point is on the outside of the fly at these locations.

Big Sky International Evolution 2P Tent Review - 4
Top: What I got. Aluminum poles, Evo body and Ultralight fly. Bottom: I carry the poles separately and put the tent in a silnylon stuff sack. It makes for a pretty compact package.

I only received the Evolution’s body, aluminum poles, and Ultralight fly. I used a small silnylon stuff sack to pack it and used titanium shepherd’s hook stakes. Later, I ordered a set of the company’s DuraLite carbon fiber poles that let me shave 3 ounces (85 g) from the weight.

Another way to cut weight when bug protection is not needed is to purchase the footprint with grommet kit, which is 5.3 ounces (150 g) and allows the 13.1-ounces (371-g) fly to be set up with just the poles for a total weight of 1.92 pounds (0.87 kg) plus stakes.

Performance

Big Sky International Evolution 2P Tent Review - 5
Going topless. Warm weather and no threat of rain is perfect for leaving the fly off to enjoy nature without nature enjoying me, like at these locations on the San Gabriel River (top) and Miller Creek (bottom).

I was able to get quite a few trips in with the Evolution last summer and fall. Desert trips in the Sespe Wilderness and the Narrows of the San Gabriel River, plus a warm weekend in San Jacinto Wilderness let me use the Evolution with the fly off, my favorite way to enjoy the outdoors. Trips to the Sierra Nevada in the Pine Creek Pass/Piute Pass area and base camping on the east side required the fly for rain protection, and finally two trips in the Paul Bunyan Forest of Minnesota pushed the limits.

The tent is a breeze to set up. If the wind is blowing, I will stake one end first but I usually just set it up, then move it as I need to find the perfect (is there such a thing?) spot, and then stake the corners.

Big Sky International Evolution 2P Tent Review - 6
Top: Trips like this one on the North Country Trail (yes, the tent is literally on it!) Bottom: While not a four-season tent, the Evolution did fine on my first snow trip of the year.

When weather or a desire for privacy dictated the fly being on, the ventilation was superb. In the Sierra we had rain on the hike in and while we set up camp. Keeping the vents open and the vestibule doors half unzipped allowed enough air movement that there was just minimal condensation on the fly and none on my quilt or the high end of the bathtub floor.

One night in the mountains saw some very heavy winds. While I did not use the Evolution there (I brought it for my son to use with Uncle Craig) I kept an eye on how it did over the three days we were there. I estimate the winds to have been gusting to 30 mph (48 km/h). The Evolution was solid while I was having some problems with the backpacking tent I was using, and other family members had their camping tent just about torn apart. The mesh inner did let in a lot of sand and dirt.

Big Sky International Evolution 2P Tent Review - 7

My first cold trip in Minnesota with the Evolution came five days after our first snowstorm of the year. Although the snow had melted, the ground was frozen enough for a lot of the moisture to be trapped on the surface. Because the wind was blowing, I kept the tent pretty buttoned up and still was fine with the condensation. But, I woke up to find that the wind had stopped and the temperature had fallen. The entire fly was coated with moisture. I opened up the doors and pulled out the fly at the ends and went back to sleep. The next morning it was 19 F (-7 C) at 7:30 am and the tent was ice inside and out. The fly really had a noticeable sag in it from the ice as may be seen in the picture to the right.

My last trip with it was in December where I used it on about a foot of snow at McCarty Lake off the Halverson Trail. There was just enough breeze to keep it dry inside while not blowing snow through the mesh. The only condensation I picked up was near my face even though I had to keep the tent buttoned up due to falling snow. One nice thing about the SuprSil-UL fabric: the snow just slides off.

Assessment

For the most part, I am very impressed with the Evolution 2P. I really liked the weight of it as delivered, and, once I bought the DuraLite poles, I decided that it is a keeper just because of the amount of room to weight.

The tent has been quite durable so far. All the zippers run freely and have seen no snags. I have mainly used it directly on the ground and the floor shows no signs of abrasion. On a couple of the wet trips I brought a piece of Tyvek to put under it just to keep it clean. I may purchase the footprint and grommet set because I like using fast-fly set-ups on spring snow.

The mesh is snag free. I have used some tents that got pulls by looking at them funny. No snags in the SuprSil-UL either. It is still looking good.

A couple things that bugged me about the Evolution had to do with the measurements. The stated size is off by nearly two inches (5 cm) everywhere. On the length, I hit the end with a winter bag. Thankfully, I never once encountered condensation on the inside of the bathtub walls or that could have been an issue. While the side measurements still have plenty of room for two pads, I wonder if the poles are figured for the width and length specified, and not what was delivered. Here is why I wonder.

The headroom is higher than stated. (I know, who would complain about that?) That, plus the fact that the sides do not sit completely flat when staked out, seems like the body’s footprint either needs to be bigger or the poles need to be shorter. This may be something Big Sky wants to look at.

Dare to Compare

While I should compare the Evolution to other dual door tents, quite frankly it blows them out of the water when comparing weight to room. But a tent that I can compare on a personal level is the Big Agnes Fly Creek UL2, a tent that impressed me so much last year that after reviewing it I kept it as my go-to shelter.

The Evolution weighs 3 oz (85 g) more than the Fly Creek with the aluminum poles and the same weight with the DuraLite poles, yet has 28% more protected space. Plus, with the pole design, it has more room and is stronger. The Evolution does cost quite a bit more, especially with the $110.00 DuraLite poles added.

Oh yeah, the Fly Creek? I gave it to my brother-in-law Dave. The Evo is now my go-to.

What’s Good

  • Lightweight
  • Excellent ventilation
  • Usable for two
  • Lots of headroom
  • Plenty of storage

What’s Not So Good

  • Measurements not correct
  • A bit short for tall users

Disclosure: The manufacturer provided this product to the author and/or Backpacking Light at no charge, and it is owned by the author/BPL. The optional CF poles were later provided at a discounted rate for ownership by the author/BPL. The author/Backpacking Light has no obligation to review this product to the manufacturer under the terms of this agreement. Addie provided the author this disclosure and he HAS an obligation to use it. ;-)

Global Test Main Page

Danny Milks and Kristin Tennessen left California in September 2009 to embark upon a two-year international backpacking adventure. Follow their travels, break down their gear lists, and step into their photos for a global adventure like nothing you’ve ever seen!

Global Test Main Page Main

Click the titles to read the article. Parts I, II, and III are narrative and gear analysis (and are members only), with comprehensive gear lists. All articles contain rich and evocative photography, with the photo essays (open to the public) using photos to tell their story.

The Global Test: Part I

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Backpackers are all over the map when it comes to answering the question “What should I pack?” What lightweight set-up, then, can be used to travel around the world? Climate, budget, timeline all played a factor as we prepared to travel the world. In the end, our gear is nothing revolutionary, but it is affordable, practical, and works for our needs. Most importantly, our set-up is livable – this is all we have, day in and day out, for two years.

As most Americans tightened their belts during the economic crisis of 2009, we decided to allocate most of our savings to travel the world ultralight for two years. Danny’s contract at UC Davis Outdoor Adventures was ending just as I was graduating, so setting out on our world tour in September was a natural choice. In August, during a family reunion, we surprised our loved ones with a wedding under the Golden Gate Bridge. A few weeks later, we flew to Guatemala City, commencing our world-wide honeymoon.

In the seven months since that flight, we have traveled through Guatemala, Costa Rica, Nicaragua, Argentina, Chile, Brazil, Uruguay, Colombia, and Ecuador. Whether we are changing buses in a bustling metropolis, backpacking through a granite canyon, camping on a tropical island beach, or summiting a snowy mountain, one fact remains the same: our packs are smaller and lighter than the packs of fellow backpackers that we have met along the way. Their jealous looks, and sometimes direct inquiries, prompted us to write this article.

The Global Test: Part II

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Latin America was the first destination on our round-the-world itinerary. Kristin and I intended to travel there for only six months, but instead stayed for nine. We were quickly improving our Spanish language skills, we were staying in our budget because overland travel was cheaper than flying to another continent, and we were tempted by the seemingly endless trekking opportunities in the Andes. We experienced all of Latin America’s seasons during this nine-month period, allowing us to evaluate our gear in almost every imaginable environment.

The most unpredictable weather we faced was in southern Patagonia in November and December, which was spring in the southern hemisphere. We experienced high winds, sunny skies, and several bouts of sleet and snow, sometimes all in one day. The coldest weather we saw was -8 C (17.6 F) at night in Peru and Bolivia in May and June when camping above 4,000 meters (13,125 feet). Monsoon-like storms were the daily norm in the “winter” rainy season in Central America. The hottest conditions were in Brazil and the Colombian coast during the summer.

We analyze our gear choices: the stand-outs, the failures, and the brilliant yellow footwear. Included in this article is a map pinpointing our travels for this leg of the journey, as well as two comprehensive gear lists and photos from across the continent.

The Global Test: Part III

Kristin and I were very pleased with the gear we selected for our nine-month tour of Latin America. We were happy with the overall performance of our set-up, and proud of the low weight and small size of the two backpacks containing our entire life belongings. However, when planning for the next leg of our journey, a three-month gallivant through Russia, we made some rookie mistakes: we packed gear that was starting to show wear, swapped things that worked for things we had not field tested, and brought more than a few items that we never used.

Despite some poor gear choices, numerous gear failures, and occasional trouble with the authorities, we survived three amazing months wandering through Russia. We completed six backpacking trips all over the vast country. We highlight both the unique beauty of the landscape and the problems we encountered on each trip. Our gear list is detailed at end of the article, where we also specify the changes we made from our Latin America Gear List.

Valley Hopping in the Cordillera Huayhuash – Photo Essay

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While down-climbing through a steep, rocky ravine on our way to Laguna Jurau, I silently cursed our maps. Yes, “maps,” as in the plural of “map.” We brought two maps while circuiting the Cordillera Huayhuash Range. The first was a free map the size of an index card which showed the trails we wanted to use. The second was a 1:50000 topographical map which (teasingly) marked the passes, but not every trail over the passes. As we descended the second pass of the day (Punta San Antonio, at 5,010 meters), the trail grew fainter and fainter as the terrain steepened. It was five o’clock, and the sun would set in an hour. We could gamble that successfully navigating through the scree-filled ravine would lead us safely to the valley. Or, we could pitch our tent on the sloped mountain, 300 meters below the nearest water source, and look for the trail down to the valley in the morning. If there was another trail.

Small Wonders of Latin America – Photo Essay

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Rarely do I think about taking photos while hiking. No photo has ever been able to fully capture the joy I experience in nature. Photographs, however beautiful they might be of the landscape, fail to arouse the overwhelmingly positive sensory assault I have while hiking. When I look back at photos taken during backcountry trips, my memories of the events are colored. Instead of recalling a variety of feelings and views, sounds and smells, my vibrant memories get intertwined with these static snapshots.

How I manage to backpack with Danny is somewhat of a mystery. His feeling about photography couldn’t be more opposite of mine. He is constantly breaking his stride to take photos, often asking me to stop with him and sometimes even pose. He can spend days organizing and editing photos once we return to civilization. Danny loves the wilderness just as much as I do, but also finds great joy in sharing our adventures with our friends and families.

Fifteen countries and more than a year later, I am grateful that Danny has encouraged me to be more open about photography. We have simply seen too much and experienced too much to store it all away in our fallible human memories. Every day of traveling is different, and the lack of monotony in daily life means we have little downtime to think, process, and store. I am happy that Danny encouraged me to stop and examine the petite beauty contained on a continent that I might not ever visit again.

Nine Days in Parque National Los Glaciares, Argentina – Photo Essay

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What’s more ultralight than not carrying any pack at all? Such was my experience in Los Glaciares National Park in southern Argentina. Our bus to El Chaltén, the village inside the park, made a mandatory stop at park headquarters. After a briefing in English given by eloquent park rangers, which highlighted safety and Leave No Trace practices, we were already impressed. Yet afternoon storm clouds had covered all of the towering peaks in the distance, and we we were unable to see the legendary Fitz Roy.

In the park office Danny and I studied the many detailed maps in different colors, dimensions, and resolutions. There was one large loop in the park, but one-fourth of the terrain crossed over the Patagonian Ice Field. We were not equipped for such an expedition. The rest of the trails mostly emanated from the main trailhead that started in town. We decided to make a base camp an hour hike from El Chaltén. From there, we would do day trips to the many glaciers. Additionally, resupplying from town would be quick and easy.

Ten Days in Torres del Paine, Chile – Photo Essay

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Sapphire Dyneema Gridstop and a flash of bright yellow. The sight was so familiar to me, yet so unexpected. I elbowed Danny in the ribs. “Look, that guy has my same backpack!” I whispered and surreptitiously pointed three rows ahead.

As we funneled off the modern bus and lined up at immigration, I made sure to navigate towards the owner of this pack, as he was certain to be an interesting guy. We were 20 kilometers outside of Puerto Natales, crossing into Chile from Argentina, on our way to Torres del Paine National Park. Danny and I had been traveling for almost 3 months in Latin America and had yet to see the GoLite brand.

“I love your backpack!” I said to this tall, smiling stranger. He introduced himself as Steve, and we soon learned that he had finished thru-hiking the Appalachian Trail a few months earlier. As we helped our new friend eat the bananas and oranges that customs’ officials wanted to confiscate from his GoLite Pinnacle, we exchanged hiking tales and talked gear. He was on his way to Torres del Paine as well.

Home Away From Home In Argentina’s Lake District – Photo Essay

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Before you view these photos of Danny and I in the beautiful outdoors near Bariloche, Argentina and get that dreamy look on your face, let me share with you a secret that took me several months to learn on my own. Traveling for long periods of time, especially in the wilderness of foreign lands, may be romanticized in literature such as Lonely Planet and National Geographic. One truth seems to be missing from these tales of exotic peoples, tasty foods, and gorgeous landscapes: no matter how much your surroundings change, the person you are inside generally remains the same.

So, if you’re like me, and you already have strong opinions and preferences about, well, pretty much everything, traveling can be frustrating. I have to constantly remind myself to keep an open mind. It was nice taking a break from that effort in Bariloche, Argentina. It was the first place I found that reminded me of all of my favorite things from home: a large variety of local fruits and vegetables, super friendly people and a strong outdoor community, sunny weather, and endless opportunities to play in the wilderness. We stayed twice as long as we had originally planned, and even started dreaming of returning in winter.

Hiking the Santa Cruz Loop in the Cordillera Blanca, Peru – Photo Essay

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One of the drawbacks of our contemporary lifestyle is how much time we spend in boxes. Our homes and offices have floors, ceilings, and walls set at ninety degree angles. To connect us to these stationary boxes, we often use wheeled boxes to travel over flat and gray roads. The paths we take are the most efficient routes, not the most aesthetically pleasing nor the most representative of the land. It is almost as if modern society is attempting to cover up and disconnect us from the earth that gives us sustenance, and, as all backpackers know, a deep satisfaction.

Backpacking is a way to free us from the boxes of our civilized lives. It is a way to connect us to the earth, to explore the terrain around us, to view the world from a different perspective. We climb mountains to answer the question “what does the world look like from up there?” We scale rocks that demand the use of all four limbs and leave us calloused, scraped, chafed, and bruised. We glide over snow for the pure joy of speed, while experiencing a world colored mostly in white. We enter forests and meadows to inhale the pleasant smells of trees and flowers, and to feel leaves brushing against our arms and grass tickling our ankles. We paddle to the middle of lakes to observe life on shore from a different angle and to feel the bobbing sensation that only rolling waves can create.

Tall Tales from Colca Canyon, Peru – Photo Essay

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Kristin and I traveled through nine Latin American countries before entering Peru. In those seven months, we met many tourists who had already been to Peru, and more than a few raved about hiking in Colca Canyon. Honestly, I had never heard of this purported amazing trek in the deepest canyon in the world. I soon learned that Colca Canyon, at 4,160 meters (13,648 feet) from top to bottom, is twice as deep as the Grand Canyon. However, there is no consensus on the “deepest” title, as there are a variety of methods to measure a canyon. There are a few canyons in the Himalayas and one other in Peru that some consider deeper. Regardless, Colca Canyon shot to the top of our list of must-see natural wonders.

Keeping it Real in Bolivia’s Cordillera Real – Photo Essay

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Several years ago, I was apprehensive about introducing my outdoors-loving group of friends (which included Brady) to my new boyfriend, Danny. Although their personal interests were greatly aligned, they had different ways of manifesting their enthusiasm. Danny recited backpacking gear weights as if he spent nights awake, memorizing outdoor company catalogues. And, although my friends and I had explored Northern California, from Point Reyes to the Sierras, I suspected that on some of our backpacking trips the weight of our liquor exceeded Danny’s base pack weight.

Fast forward several years to the Cordillera Real in Bolivia, where my husband, Danny, my old friend, Brady, and I backpacked together for four days. The boys spent much time discussing Brady’s new lightweight gear and the latest advancements in ultralight material technology, while I tried to watch my footing despite frequently rolling my eyes.

Primus Eta Solo Stove Review

A heat exchanger stove in the now fairly standard upright format. Does the Primus Eta Solo outperform the competition?

Introduction

There are quite a few small upright heat-exchanger stoves on the market now. In general they consist of a stove unit which screws onto the top of a canister, and a special pot with a heat exchanger on the bottom. The first one was released by Jetboil, and we believe that it was made for Jetboil by Primus. It was distinguished by having a very bulky black plastic surround on the stove, which was meant to support the pot – except that the bottom parts of the support didn’t connect with the canister.

The astute reader will note that the measured weights listed below add up to considerably more than the claimed weight of 365 grams. Frankly, we have no idea of how the claimed weight was reached. We are sure about the measured weights.

Primus Eta Solo Stove Review - 1
The Primus Eta Solo, courtesy Primus

Specifications and Features
Manufacturer Primus www.primuscamping.com
Model Eta Solo
Materials Brass, titanium, plastic, fabric, foam
Size approx 105 mm dia x 160 mm tall (4.1 in x 6.3 in)
Weight (claimed) 365 g (12.9 oz)
Weight (measured) Pot: 151 g (5.3 oz)
Stove: 164 g (5.8 oz)
Lid: 23 g (0.8 oz)
Cozy: 39 g (1.4 oz)
Supports: 37 g (1.3 oz)
Hanger: 24 g (0.8 oz)
Base: 24 g (0.8 oz)
Boil time (claimed) 2.1 min for 0.5 L
Power (claimed) 2.1 kW (7150 BTU/hr)
MSRP US$60

Overview

Well, this stove looks very similar to the Jetboil – but it also looks similar to the copies made by other brands.

Heat exchanger stoves are all a bit more fuel-efficient than the basic upright stove such as the Primus Express, but you usually pay for this small saving in fuel weight by a large increase in the weight of the stove system. Exactly why a heat exchanger stove needs such a bulky lump of stuff around the basic burner is not at all clear, although this one does have an extra feature not found on other similar models. It comes with a ‘hanger system’ which has two parts.

The first part is a folding bracket or clip and some attached wire: you attach the clip to the pot and then hang the stove by means of the length of wire going upwards from the clip. The design is such that the system does hang vertically. This could definitely be useful for climbers.

The second part makes sense when you think about what happens when you lift the pot up in the air. Normally, the stove would stay on the ground, but in this case the pot is actually secured to the stove by two metal clips. That makes for a quite neat integrated solution to cooking dinner on a small ledge 1000 m above the ground.

The rest of the stove and the 0.9 L pot is pretty standard. It has a built-in piezo lighter and comes with a three-legged plastic canister stand and a plastic lid with a pouring hole. In case you want to use a more conventional pot on the stove it also has three wire pot supports which can clip into the structure. The canister stand can be useful, as the stove and pot is a rather tall combination. Yes, the 0.9 L pot is very narrow and tall. There is also a cozy to wrap around the pot, and this can be used even when the stove is running.

Normally, a tall narrow pot is an inefficient design, and in this case the heat exchanger fins do a very good job of sucking the heat out of the flame and hot gases. You can put your hands around the pot while the stove is running without burning them. That’s why the cozy survives, of course. With the cozy and the lid, hot water stays hot for quite some time.

The stove fits into the pot with the extra pot supports and the hanger. It makes for a fairly solid package.

Field Use and Assessment

Primus Eta Solo Stove Review - 2

Well, the stove certainly works well at heating water. We did not try actually cooking food in it, as the shape is just not good for stirring. But, you could always boil the water and then throw the stuff into the pot to ‘dutch oven’ or ‘freezer bag’ it. You might be advised to put the pot on the ground for this, to lower the centre of gravity.

Unfortunately, it must be recorded that we had several problems with this stove. We list them here, although they risk dominating the Spotlite. It should be noted up front that the stove heats water very well.

The first was a small problem with the pot supports: the first unit received was not made to specification. That was fixed by replacement. Perhaps the original unit was pre-production.

The second problem was that the pot always seemed to be a bit tilted on the stove, even when clipped down properly. The tilt was not large, but combined with the height it did suggest care was needed lest it be knocked over. It was not clear why this was so, but it seems that the threaded base to the stove was at an angle to the rest of the stove. Very odd, but definitely there.

The next problem was found when the water boiled, and I wanted to detach the pot from the stove. You can see a large red clip handle below the pot in the photo. There is a second clip on the other side of the stove, and these clips are what secures the stove to the pot. In principle you push both clips inwards and the pot is released. In practice that proved very hard to do. The clips have to be pushed in a fair way to let the pot go, and that is difficult to do with one hand, especially because the region where the palm of your hand would be was pretty hot. It was easy to do with two people: one person pushed a clip in with each hand, while the second person held the pot and removed it. Getting the pot off the stove single-handed without spilling the water was rather difficult – and the name and size of the pot suggest it is meant for a solo walker.

Once the water was boiling, the lid went a bit soft and bulged downwards. Getting it off was not too hard, but the lid did seem to acquire a bit of permanent distortion after the first couple of boils. In addition, it did smell a bit at first, possibly from the molding process. This eventually went away. Care was needed when the water came to the boil: the steam comes out that small hole in the lid rather strongly. Care was also needed to avoid putting too much water in the pot: boiling water could come splashing over the edges or out of the hole in the lid rather easily.

While I was trying to get the pot off the stove I found that the cozy could easily slip downwards, covering the air outlets at the bottom of the pot. If this happens while the stove is running two very nasty things could happen. The first is that the heat build-up under the stove would quickly melt the bottom edge of the cozy, and very possibly set it alight. Not good. The second, and even worse possibility, is that the blockage could suffocate the flame inside, causing it to go out. That would leave gas pouring out of the canister, but not being immediately burnt. The consequences could be less than desirable.

The enclosed underside of the stove had another unfortunate consequence, as I found when I first tried to use the piezo igniter. I fumbled the action twice, and that let a fair bit of fuel vapour build up inside the heat exchanger region under the pot. After the third click, the igniter worked – with a kaboom, and flames out the side. Fortunately, I did not get burnt. Unlike conventional stoves, the fuel does not dissipate when there is no flame. Mind you, other brands of heat exchanger stove with the same configuration present the same risk.

Summary

The stove certainly does work and could be useful for a single climber, but it has a number of little problems which would make it rather problematic for many users.

What’s Good:

  • Hanger system good for climbers

Whats Not Good:

  • See Field Use text for a list of problems

Disclosure: The vendor provided this product to the author and/or Backpacking Light at no charge, and it is owned by the author/BPL. The author/Backpacking Light has no obligation to review this product to the vendor under the terms of this agreement.

MYOG: Group Pot Stand and Windscreen

What’s better than a communal, one-pot meal between hiking buddies under the stars? Learn how to make a pot stand/windscreen that’s sturdy enough to hold a large pot filled with dinner and light enough to not bow your backpack.

As backcountry hiking becomes more popular, more groups are hitting the trail for long weekends or week-long trips.

What’s better than a communal, one-pot meal between hiking buddies under the stars? Problem is, you need a pot big enough to hold whatever noodles or stew you’re whipping up. And if the pot’s too big, your stove won’t hold it.

It’s easy to make a pot stand/wind screen that’s sturdy enough to hold a large pot filled with dinner and light enough to not bow your back. If you drink coffee, it’s practically free and a great way to recycle your used packaging.

MYOG: Group Pot Stand & Windscreen - 1

Supplies:

MYOG: Group Pot Stand & Windscreen - 2

  • Large aluminum coffee can with plastic lid
  • Wire hanger

Tools:

  • Can opener
  • Needle-nose pliers with wire cutters
  • Tin snips
  • Hammer
  • Punch

Steps

MYOG: Group Pot Stand & Windscreen - 3
Step 1: Use the can opener to take the bottom off of the coffee can. Using a newer can opener that prevents sharp edges can help you avoid ragged metal cuts.

MYOG: Group Pot Stand & Windscreen - 4
Step 2: Use pliers to untwist the wire hanger.

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Step 3: Measure the wire hanger across the top part of the coffee can, leaving a little room to remove the twisted wire end of the hanger. Cut the hanger so the wire part goes from can edge to can edge. Cut another section about 2-3 cm longer than the first.

MYOG: Group Pot Stand & Windscreen - 6
Step 4: Bend the ends of the shorter piece down to they can fit into the can’s lip.

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Step 5: Use the hammer to pound the wire into the lip of the can. If it doesn’t go in, use the punch to punch a hole in the lip. Once your holes are punched on the same diameter, use the pliers to twist one of the ends of the wire in on itself, preventing the wire from slipping out of the hole. Do same to the other end once it’s punched into the lip.

MYOG: Group Pot Stand & Windscreen - 8
Step 6: Take the second, longer wire piece and bend it sharply in the middle using the pliers. Bend both sides back to horizontal to form a small notch into which the first wire will fit once both wires are installing on the can’s lip.

MYOG: Group Pot Stand & Windscreen - 9
Step 7: Repeat steps 4 and 5 for the longer, notched piece of wire.

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Step 8: Measure your can and the height of your stove. Adjust the height of the can accordingly by cutting to desired height.

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Step 9: Using tin snips, cut square notches into the sides of the can at the bottom (where you just shortened the can’s height) for airflow.

MYOG: Group Pot Stand & Windscreen - 12
Step 10: Put the lid on the bottom of the can to protect skin and other gear from snagging or tearing. Keeping the lid allows you to use the windscreen as a basic storage container for small but bulky items because the wire hanger grill crosshairs stay in.

Results

MYOG: Group Pot Stand & Windscreen - 1

The group pot/kettle stand/windscreen can easily support a full two-liter pot (hopefully lighter than what I used for display purposes!). The wire hanger crosshairs let you use almost any size pot or pan, making the stand an excellent wind screen for smaller vessels. Its sturdy sides make it ideal for storing sensitive and fragile gear when in transit, and the reuse/recycling aspect of the stand keeps your costs and environmental impact down.

MSR Carbon Reflex 3 Tent Review

Dropping two full pounds from my current tent weight to use a sub-five-pound three-person double-wall tent all summer sounded too good to be true. How did MSR’s lightest 3P shelter work for the Estrella family?

MSR Carbon Reflex 3 Tent Review - 1
The Carbon Reflex 3 with rain fly at half-mast in Horseshoe Meadows.

Introduction

re·flex

[adj., n. ree-fleks; v. ri-fleks]

adjective

Physiology, noting or pertaining to an involuntary response to a stimulus.

When I was asked if I would like to test the new Carbon Reflex 3 with my children, I had an involuntary response. I yelled “heck yes!” Letting me drop 2 full pounds (0.91 kg) from my current tent weight to use a sub-5-pound three-person double-wall tent all summer sounded too good to be true. See how MSR’s lightest 3P shelter worked for the Estrella family.

Specifications

Year/Manufacturer/Model 2009 Mountain Safety Research Carbon Reflex 3
Style Three-season, three-person, double-wall tent.
Fabrics Body: 20D x 330T ripstop nylon 66 & DWR & 20D polyester mesh
Floor: 40D x 238T ripstop nylon 6 30000mm Durashield polyurethane coated
Fly: 20D x 330T ripstop nylon 66 1000mm polyurethane & silicone coated
Poles and Stakes Poles: 3 ea Easton Carbon FX poles, total weight 14 oz (397 g)
Stakes: 8 ea Needle stakes, 6.25 in (16 cm), 0.4 oz (11 g) each, 2.8 oz (79 g) total
Dimensions Length Listed: 88 in (224 cm)
Width Listed: 68 In (173 cm)
Inside Height Listed: 46 in (117 cm)
BPL Measured Length: 85 in (224 cm)
BPL Measured Width: 65 In (173 cm)
Packed Size 6.5 x 19 in (16 x 48 cm)
Total Weight Listed Weight: 4.81 lb (2.18 kg)
BPL Measured Weight: 4.76 lb (2.16 kg)
BPL Trail Weight: 4.49 lb (2.04 kg) w/ two stakes
Protected Area Floor Area: 38.4 ft2 (3.6 m2)
Vestibule Area: 20 ft2 (1.8 m2)
Protected Area/Trail Weight Ratio 13 ft2/lb (2.65 m2/kg)
MSRP US $599.95
Options Footprint 11.9 oz (337 g)
Website www.cascadedesigns.com

MSR Carbon Reflex 3 Tent Review - 2
Top: Hooped poles at the sides give the Carbon Reflex 3 a lot of interior space by creating vertical walls. There is room for three standard width sleeping pads with room to spare. Bottom: The full coverage fly overhangs the doors keeping the inside protected during entry in rainy weather.

Design and Features

The Carbon Reflex 3 is Mountain Safety Research’s (MSR) lightest weight three-person tent. It gets its name from the Easton Carbon Fiber poles used to shave some weight, but it is how they use those poles that really make the tent stand out.

Many of my roomiest winter tents have been hoop or tunnel design tents with the poles bending side to side instead of crossing each other. MSR used this design with the Carbon Reflex 3, going top to bottom in its case. To make it freestanding they used a trick that they employed with the Fling, a 3-4 season tent I tested a few years ago. They added a crossing pole at the top. As the pole is wider than the main tent, it holds the sides out and, better yet, keeps the fly held further away from the inner body.

Set-up is very straight-forward. The polyester mesh inner attaches to the poles by means of reinforced pole clips. Once up, I stake it out before placing the fly on. The stake points have line tensioners to allow further adjustment later. The fly has grommets that attach to the top pole for strength and quick-disconnect buckles at the corners. Straps through the buckles allow fine tuning of the fly’s tension. There are plenty of guy points around the fly for added strength in windy conditions and two lower guy lines with tensioners to pull out the bottom for better ventilation.

A needle stake at each door pulls the fly out to provide two roomy vestibules. The vestibule doors close with waterproof zippers which hide in hooded covers when closed. As mentioned earlier, the center poles extend away from the sides of the inner tent. This keeps water from falling into the inner when the vestibule doors are open. As the Carbon Reflex does not have any upper vents, it also allows the vestibule doors to stay open at the top if needed to get airflow through the tent while still staying dry.

 

MSR Carbon Reflex 3 Tent Review - 3
Top left: The stake points at the corners have line tensioners. The buckled-in fly attachments have strap tensioners. Top right: While the zipper is waterproof the place it stops is not, so MSR gave it a parking garage. Bottom: Lower guylines at each end pull out to provide ventilation and keeps the wind from slapping the ends all night.

The inner tent has a bathtub floor which extends higher on the ends. Although MSR does not say it, I think that this is to protect the users’ heads from wind and wind-blown rain coming under the fly. A small pocket at each corner of the tent provides storage for flashlights and such.

As usual, MSR provides separate storage sacks for the poles and stakes, 0.7 and 0.3 ounces (20 and 8 g) respectively. The optional footprint protects the tent in dirty or rough spots and can be paired with just the poles and 23.4-ounce (663-g) fly to cut the trail weight down to 3.25 pounds (1.47 kg) with eight stakes.

MSR Carbon Reflex 3 Tent Review - 4
Top: Parts of the Carbon Reflex 3. Stuff sack, pole sack, Easton carbon fiber poles, needle stakes, pole repair sleeve, guy lines w/ tensioners, stake sack, inner, fly and optional footprint. Bottom: The 1.8-ounce (51-g) stuff sack has ample room to keep the footprint in it too.

Performance

The Carbon Reflex was first used by the kids and me in Maplewood State Park at Lida Lake. It got down to only 45 F (7 C) and had high humidity as a storm was rolling in. In fact, as I got up early to make coffee, I saw that the expected clouds had a freaky tornado-look and got the kids up and out. (Good thing too, as we got slammed not three minutes after leaving.)

Next, I used it with the kids at Itasca State Park where we backpacked in to McKay Lake. The temps were 74 to 47 F (23 to 8 C). It rained briefly in the early morning, was very humid, and the bugs were atrocious.

Our last trip with it was to Horseshoe Meadows in Inyo National Forest for three days of camping and day hiking. The first night was pleasant but the second was extremely windy. The wind was coming at one of the doors so I told the kids to use the other. It fended off the wind well but around 2:00 AM, a gust pulled the vestibule stake from the ground, slapping the fly against the door. The following gust really clobbered the tent as it was now presenting a flat face to the wind. I scurried out and re-staked it before the whole thing blew apart.

I used the Carbon Reflex with a friend (and fellow BPL member) on Durwood Creek in the Sequoia National Forest. The temps got down to 45 F (7 C). We again used it together the next month in Sierra National Forest in the Dinkey Lakes area. We camped near Island Lake where it was cool, humid, and quite buggy.

MSR Carbon Reflex 3 Tent Review - 5
My kind of lake house. The Carbon Reflex 3 on Island Lake (top) and McKay Lake.

Assessment

I came away from this past summer’s trips with the children really liking the Carbon Reflex 3. The amount of room provided by the hooped pole design was instantly noticeable. While the stated dimensions are off, it was not by much. We had no problem fitting three standard width pads in it. On the trip to McKay Lake, I brought my large NeoAir which, when placed next to the kids Insulated Air Core pads, did take all the room across the floor.

What we all appreciated was the amount of room the hooped pole design gives. The trip to McKay Lake was the buggiest we have ever seen. Once the sun started going down enough to cool off, the mosquitoes came down from the trees in a buzzing cloud. As it does not get dark until after 9:00 PM in Minnesota in the summer time, we spent a few hours of quality time stuck inside. We used the MSR Mutha Hubba for the two previous years and a Big Agnes Copper Spur UL3 the year before that. The Carbon Reflex blows them away for interior space.

MSR Carbon Reflex 3 Tent Review - 6
Top: The family that plays together stays together! The Carbon Reflex has lots of room when conditions trap us inside. Bottom left: In dry climates the all mesh inner tent alone gives the feel of sleeping outside without the bug bites. Bottom right:.The vestibules have plenty of room for protected gear storage while still providing easy access.

What Dad really appreciated was the weight. I sold the Mutha Hubba after the first trip with the Carbon Reflex because it let me drop 2.1 pounds (0.95 kg), while getting the extra room. The weight was low enough that I did not mind bringing it on a couple trips with one of our fellow BPL members. I don’t normally share tents with other adults who are not family, but since this one was a woman I decided to offer my tent in the sake of tent data gathering… The Carbon Reflex is a palace for two people.

I never really got to see how it handles rain. For the first time I can remember, we never had rain in Minnesota on our trips. Well, the first camping trip would have seen it, but it was far too dangerous to stay. We did get sprinkled on a few times, but not enough to make any evaluations. As the materials used are the same as the Hubba Hubba HP, which has seen plenty of weather, I figure the Carbon Reflex will prove to be pretty weatherproof.

Condensation was not as big of a problem as I thought it may be when I first saw that it did not have upper vents. I almost always kept the vestibule doors open to create air movement. There was build-up on the inside of the fly in humid Minnesota. In California the air was dry enough that there was no condensation, especially the night spent without the fly on.

One problem with the mesh inner was with dirt blowing in. The trip to Horseshoe Meadows saw heavy wind the second night. We got a lot of dirt blown in, coating our quilts and pads. I pulled the fly as low as possible and changed the angle of the side pull-outs to lessen exposure. The wind was hitting one of the doors, providing a better shape to shed it, so we instead used the other door. But, in the night a gust pulled the stake out and I woke to see Emma getting clobbered by the side of the tent. (She didn’t even wake up. Hiking is good for wearing kids out.) I reset the stake and set a good sized rock on it which held until we broke down the next morning.

All told I am very impressed with the Carbon Reflex 3. At this point, seeing as I gave away my Copper Spur and sold my Mutha Hubba, it is staying as my go-to family backpacking tent.

MSR Carbon Reflex 3 Tent Review - 7
While the Carbon Reflex is not hard to set up alone, it is easier and more fun with helpers like Emma and Raymond.

Dare to Compare

The best freestanding tent I can compare to the Carbon Reflex is one of the other 3P tents that the kids and I have used a lot, the Copper Spur UL3 from Big Agnes. The total weight of both tents is identical. The Copper Spur has more interior floor space but the Carbon Reflex has much more true room inside thanks to its pole design. The Carbon Reflex has a 2-inch (5-cm) higher peak height and slightly bigger vestibules. I like the door design of the Carbon Reflex much better than that of the Copper Spur too. Trust me. If you have kids you don’t want your doors dropping to the ground when open. (Love you guys…)

In the Copper Spur’s favor, for shoulder season use in snow its partial height solid walls are great, plus it has two high vents for added air movement. It is also $100.00 less expensive.

What’s Good

  • Roomy
  • Lightweight
  • Fast set-up

What’s Not So Good

  • Expensive
  • Sizing is off

Disclosure: The manufacturer provided this product to the author at no charge, and it is owned by the author. The author has no obligation to review this product to the manufacturer under the terms of this agreement.

24-Hour Gear Lists

See the winners of our recent contest and download a zip file of all the submissions. Use your favorite to plan YOUR next trip!

It was long-running and took some time to judge, but the 24 Series Gear List Contest is complete!

Results

  1. Jamie Shortt
  2. Darian Davis
  3. George Matthews
  4. Jeremy Gustafson and Dan Durston

Please click each list to see a full-res version of the winners (you’ll have to zoom), or download all the submissions here (3.5 MB zip file).

24-Hour Gear Lists

Jamie Shortt, first place

Darian Davis, second place & George Matthews, third place.

Jeremy Gustafson, honorable mention & Dan Durston, honorable mention.

Thank you again to all who submitted! We have plans for Jamie’s list, but we’re keeping those under wraps for the time being…

Keeping it Real in Bolivia’s Cordillera Real: Global Test Photo Essay

Lightweight backpacking in Bolivia’s northern Andes.

Editor’s Note: click here to see all the articles (and a brief synopsis of each) in this excellent series.

Global Test Photo Essay: Keepting it Real in Bolivia’s Cordillera Real - 1
Ultralight in Bolivia: sandals, wool layers, felt bowler hat, and a frameless pack.

Nine months into our Latin American journey, our friend Brady flew to Bolivia to join Danny and me on a trek in the Andes. We were thrilled to have new conversation material and a showcase of the latest lightweight gear from the US. On top of all that, it was, for me, the successful pinnacle of an inescapable venture.

Several years ago, I was apprehensive about introducing my outdoors-loving group of friends (which included Brady) to my new boyfriend, Danny. Although their personal interests were greatly aligned, they had different ways of manifesting their enthusiasm. Danny recited backpacking gear weights as if he spent nights awake, memorizing outdoor company catalogues. And, although my friends and I had explored Northern California, from Point Reyes to the Sierras, I suspected that on some of our backpacking trips the weight of our liquor exceeded Danny’s base pack weight.

Fast forward several years to the Cordillera Real in Bolivia, where my husband, Danny, my old friend, Brady, and I backpacked together for four days. The boys spent much time discussing Brady’s new lightweight gear and the latest advancements in ultralight material technology, while I tried to watch my footing despite frequently rolling my eyes.

I suppose there is no greater form of flattery than a close friend bonding with your significant other, but, as I crawled into the tent each evening, I longed for the nights when my eyes closed more quickly after a few sips of port. But, maybe it was not only alcohol which brought on my drowsiness. Perhaps carrying an eight pound pack on this trip did not drain my energy as much as carrying a 22 pound pack, like in my pre-Danny days.

Global Test Photo Essay: Keepting it Real in Bolivia’s Cordillera Real - 2
After six hours on various modes of transportation to get from La Paz to the mountains, we finally began our backpacking adventure. Our trek started in the afternoon, after the clouds rolled in, at an altitude of about 3,500 meters (11,283 feet).

Global Test Photo Essay: Keepting it Real in Bolivia’s Cordillera Real - 3
On the second day we were all smiles as the sky opened up and revealed stunning views in every direction.

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We hiked up this valley to a saddle at 4,738 meters (15,643 feet). Photo courtesy of Brady McDaniel.

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The trail in this valley was well-defined because it led to an active mine. We heard several blasts throughout the day, so we decided to turn around and find a quieter valley in which to set-up camp.

Global Test Photo Essay: Keepting it Real in Bolivia’s Cordillera Real - 6
Danny and Brady chatted incessantly about sil-nylon, tyvek, spinn cloth and cuben fiber.

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Kristin was excited to find someone to talk to.

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Are these clouds rolling in or out? We continuously monitored the sky for signs of inclement weather. We lucked out with no rain or wind, just fog.

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The afternoon traffic jam.

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Every so often, the clouds teased us by exposing the beauty of the 6,000+ meter (19,685 feet) peaks towering above.

Global Test Photo Essay: Keepting it Real in Bolivia’s Cordillera Real - 11
These two photos, taken less than an hour apart, demonstrate how quickly the weather changed.

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An abandoned mine. We passed several more open mines, many of which were unmapped and likely illegal.

Global Test Photo Essay: Keepting it Real in Bolivia’s Cordillera Real - 13
We couldn’t see the massive peaks surrounding us, but we thoroughly enjoyed the quiet stillness of this small lake.

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On the last night, we pitched our tents in the dark on this plush, grassy plateau at 3,500 meters (11,483 feet). We awoke the next morning to this amazing sunrise and expansive view, while the clouds settled into the valley below. Pictured here are Brady’s Golite Xanadu 1 (1340 grams/47 ounces) and our TarpTent Double Rainbow (1134 grams/40 ounces).

Global Test Photo Essay: Keepting it Real in Bolivia’s Cordillera Real - 15
We followed the trail/dirt road as it dropped below the clouds and through an enclave of houses and a region prime for vegetative growth. It was warmer here than in the higher altitudes and received more precipitation and ground water than in the lower elevations.

Global Test Photo Essay: Keepting it Real in Bolivia’s Cordillera Real - 16
Something breathtaking is always blooming in the Andes, regardless of season.

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A landslide had taken away this section of the trail, leaving a steep, loose hillside to scramble along.

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As we neared the end of our trek, we looked back and finally saw the full grandeur of the mountain range. Mt. Illampú, on the left, is the fourth highest peak in Bolivia at 6,368m (20,892 ft).

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Sorata – the beginning and end point of our adventure. It was an oasis in an otherwise dry, steep, and desolate landscape.

Apparatus for Testing Thermal Insulation Properties

When it comes to assessing things like air mats, foam mats, and other insulating things, the common measurement is called an R-value – meaning thermal resistance. We describe equipment designed and built to provide calibrated measurements of R-value for BPL articles.

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