The Sea to Summit Ultra-Sil Nano Travel Day Pack (MSRP: $29.95, 1 oz / 30 g) is an 18 L (1100 cubic inches) summiting daypack that can be compressed to the size of an egg and tucked into a multiday pack for peak-bagging on longer trips.
- 18 L capacity
- MSRP: $29.95
- weight: 1 oz / 30 g
- compresses to roughly egg size
- 10 lb (5 kg) recommended load capacity
- 15 denier siliconized nylon fabric
- asymmetrical zipper to reduce pack size
- bar-tacks at stress points for added strength
An ultralight summiting pack is a piece of kit that has appealed to me for a while. I’m not usually a big peak bagger on multi-day trips, but the occasion has come up when one would be useful.
I knew I’d be spending a day camped as part of my Corona Ridge adventure, and I wanted to explore the upper reaches of Corona Canyon. The smallest and lightest pocket pack (in one of my preferred brands) is the Sea to Summit Ultra-Sil Nano Day Pack. I was instinctively drawn to this pack’s little lime-sized package. It’s light, compact, and I could picture tossing it into my kit on any trip where I might need a summiting pack. I made the purchase and took it out into the field on a summer excursion deep into a canyon off the North Saskatchewan River’s southern banks. This review is based on my experiences on that trip (and a few others throughout 2020)
The Sea to Summit Ultra-Sil Nano Travel Day Pack impressed me with how truly tiny it packed and how much space there was in the pack once unfurled.
I could easily fit two down insulating layers (a vest and a sleeved hoodie), a rain/wind shell, a hard-sided Nalgene 1 L bottle, a pair of gloves, a toque (Candian for beanie hat), a Buff, a sun hat, small bottle of sunscreen, my mirrorless camera, and room for snacks.
I will note here I wear kid’s size large or women’s extra small so my clothes aren’t as voluminous as those found in many packs.
The Sea to Summit Ultra-Sil Nano Travel Day Pack is a one-compartment pack with a relatively small opening. The more I stuff into the Nano, the less likely it is that I can find anything. I will also note the zipper is light-duty – similar to what you would find on a windbreaker – so stuff with caution my friends.
Sea to Summit made the most of the opening by making it a diagonal slash opening across the top of the pack.
Fit and Comfort
Putting on my well-stuffed Sea to Summit Ultra-Sil Nano Travel Day Pack Nano is comfortable enough, but not something I want to wear for longer than about an hour or two continuously (which is also about as long as most mid-trip peak bags take.) As with any frameless pack, care in packing is crucial.
I’ve also loaned it to other hiking partners while I was off taking photos or doing other things and the rather formless pack fits men about 6 ft (2 m) tall about like it fits me – not perfectly, but functionally.
The Sea to Summit Ultra-Sil Nano Day Pack is handy to have around, but I do find it uncomfortable after an hour or two. This isn’t unexpected for what is essentially a formless sack of nylon.
I modify the shoulder straps by adding an elastic clip cord (the pad-strap from my Enlightened Equipment Revelation quilt). I also will note that the fabric is light duty and I did manage to puncture a small hole in the ripstop fabric. The hole was easily patched with some Tenacious Tape on the inside and outside of the pack fabric.
I took the Sea to Summit Ultra-Sil Nano Day Pack on my Corona Creek adventure and (a few others throughout 2020) and ten-out-of-ten would bring it again. I’ve started throwing it in my pack if any kind of potential off-piste adventure is expected.
Learn More: Sea to Summit Ultra-Sil Nano Travel Day Pack
- Read Emylene’s review of Rab Slippers and Socks
- Check out our forums and join the discussion on summit packs
- Or check out this MYOG summit pack.
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