day hikes and water bottle/pouch to keep it cool?

wrap it in yr insulation (poofay) in yr pack

make sure it doesnt spilll

thats all there is to it

;)

Freeze it in advance.  Keep it wrapped in clothing unit you start your hike (warm clothing is – surprise! – very good insulation).

It might limit how fast you can drink it, but it will be cold for much longer.

Or:

It is pretty safe to freeze a pouch.  For a more rigid water bottle, leave it only 80% full so the expanding ice doesn’t crack the bottle.

Or:

Put your water bottle in the fridge.  Transport it to the trailhead in an ice chest with some ice or blue ice in it.  You’ll start your hike with very cold water.  It will stay cold longer if you wrap it in extra clothing inside your day pack.

Here are some platty insulators out there, not sure about 2l, but you could try the camelback insulated one.myou could also make a pouch with reflectix, see how that does.

Since weight is less of a concern on day hikes, you could use a double-walled a stainless steel bottle or thermos.  Hydro Flask makes a variety of nice double-walled vacuum insulated bottles.  However, this is a HEAVY option.  For example, my 18 oz Hydro Flask weights about 10.5 ounces and my .5 L Stanley Classic thermos weighs 13 ounces, sans the additional screw on mug cap.  On the upside, when filled with ice, these options will probably keep your water cool for all of an 8-12 hour day hike… if you don’t drink it all before the end of the hike.

A much better option, in my opinion, would be to use a plastic double-walled bottle like the Camelback  Podium Chill or the Camelback Podium Ice.  These hold 21 oz. and 24 oz. in their largest versions, respectively,  and each weights under 6 ounces.  In my experience, the Podium Chill does a decent job of keeping chilled water cold for about 3-5 hours depending on the conditions.

While wrapping you’re bottle in a jacket is a viable solution, the bottle probably won’t be as easily accessible as you’d like.

Thank you all. I dont mind the extra weight of a flask etc since its a day hike and it may be impromptu so may not be able to freeze in advance Thank you Andre, great suggestions.

What about bottles people use at the pool? I see a lot of Kleen Canteens….

Nothing light.

You can put a Nalgene in an insulated bottle parka (made to keep it from freezing).

You can use plastic insulated bike style water bottles

Bury it in your pack away from your back

Use a vacuum thermos/bottle

Any but the last will work for a few hours, but that is about it. Eventually all will warm up. Vacuum bottles are heavy. f you want to cool off, evaporative accessories like headbands, bandanas, etc might help.

Went canyoneering for first time last week and guide gave us each a frozen bottle of gatorade. It lasted many hours frozen.

one note about frozen bottles … itll get condensation so if you wrap it in yr down poofay, it may get a bit damp

might not be a problem if its hot and dry anyways … but something to consider

;)

These seem to be everywhere, at least at the pool
<h1 id=”title” class=”a-size-large a-spacing-none”><span id=”productTitle” class=”a-size-large”>MIRA Insulated Double Wall Vacuum Stainless Steel Water Bottle, </span></h1>

Do you DIY/MYOG at all? I’ve made and experimented with a couple different super insulated, non vacuum bottles that are lighter than same.

My next one will be a silicone bottle, inside a PP (polypropylene) bottle.  In the space between the walls of the silicone and PP, will be a layer of aluminum foil, and then the rest will be aerogel loose particles.  Then small sleeve of Down to go over the top (the Down will be sewn between an inner layer of UL waterproof fabric and outer, breathable UL fabric).  Down sleeve goes over the top when not being used.

If loose aerogel particles is too expensive, then other things could be used, like Kapok fiber, CCF foam, styrofoam micro beads, Apex, loose polypropylene microfibers.  Probably CCF foam and loose PP microfibers will be the warmest per weight, but none of these will be near as good as the aerogel.

Based on past models, such a combo would weigh in the range of 6 to 8 oz or oz for 22 oz capacity, and be very, very highly insulated. (a less efficient, slightly heavier model, i put boiling water in and put it in a fridge overnight and 8+ hrs later, the water was not cold, but about tepid).