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Meh. Not sure what these are good for. If they are giving these out in ICE camps, they are basically giving them very very little. My friend and I went camping and used these as a blanket for warmth and to protect from the ground (picnic style). Really, I'm not sure a regular piece of plastic wouldn't be just the same and more durable. Could be a user error. I was not impressed.
Edited: changed my review two 2 stars because after we talked, we agreed they did very little. This was for 35-40° temps in the northern hemisphere.
It's a decent product, good choices in colors. The camouflage ones barely reflect any light, which is specifically why I purchased them. That being said, the prices of these are ridiculous. You can get packs of ten for half the price that are just as good.