BWCA Homemade water bottle insulator for winter camping Boundary Waters Winter Camping and Activities
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08/03/2020 11:23AM  
This is an odd time to be posting this, but the post in the gear forum on water bottle koozies got me on the subject.

This is a homemade, deluxe water bottle insulator that I use for winter camping. I store a 40 oz stainless steel Klean Kanteen bottle inside of it, carried on the sled during travel or stashed somewhere overnight (I'm a cold tenter), so that I have water ready to go when I get to camp or first thing in the morning.

The thing that makes it unique is the insulation material, which is a chunk of large-diameter pipe insulation from McMaster-Carr (item number 4463K176). It's 3/4" thick, seamless, and the inside diameter (with some metal foil adhered to it for heat reflection and friction reduction) is a perfect slip fit for the Klean Kanteen bottle. I got carried away and added a tethered lid with pull-out loop as well. It fits perfectly inside my therm-a-rest stuff sack (which is available since I don't bring inflatable pads on winter trips), and then crosswise inside a milk crate, in which I carry miscellaneous stuff on the sled.

I still have a couple of feet of the pipe insulation I could spare if anyone is interested.

How long 'til freeze-up?

Bruce





 
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Gadfly
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08/03/2020 01:26PM  
I'm glad you posted, the miserable heat we have had this summer has me longing to see some snow flakes and already thinking about my trip planned for December. Although I hot tent I definitely have issues with water freezing while traveling and this will help give me some good ideas. We push hard on our travel days and having our water bottles freeze up sucks. I have a soft sided cooler I pack food in and usually keep an extra water bottle in there that usually stays thawed but I prefer not to mess with my packed sled too much while traveling. Thanks for posting this idea!
 
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