those gold/silver emergency blankets: do they really work, and how?
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Yes, they work. They are not comfortable or cozy but they will keep you from freezing. I slept with one once on an overnight trip where I forgot my sleeping bag, wrapping myself up on top of my regular daytime clothes. Not the best sleep I’ve ever gotten, but I did sleep, and was not terribly cold.
On a Boy Scout canoeing trip in the summertime, one of the kids’ dry bags failed when his canoe capsized, and his sleeping bag got wet. It did not fully dry out before nightfall and we had him get into the damp sleeping bag and wrap a space blanket around himself outside of the sleeping bag (so it was the first layer beween the outside air and the damp sleeping bag).
This worked; he said he was incredibly toasty, and when he got out of this thing the next morning and unwrapped the “aluminum foil” from around himself, a cloud of steam was visible rising up from the warm and still very damp sleeping bag, giving him the nickname Pop-Tart for the remainder of his Scouting career.
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