this post was submitted on 03 Aug 2026
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I've seen people use rolled foam like this rolled around the inner edge of their frame-less backpacks for a little support. They take up very little room this way, because it's just the thickness of the foam x however many wraps it makes around the inside of the pack. The "inside" space is used storing the rest of your gear, the added support is nice on your back, and it also protects the thinner fabric of the pack from anything sharp inside.
interesting
Another dual use is to line your food items carrier (in case there is one) with someone's foam pad, and it'll insulate the food from the direct heat of the sun.