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Freeze a 24 oz can. It will bulge out. Put it in a freezer bag. Pack it in the middle of your sleeping bag. Wrap your sleeping bag with your insulated pad. Throw all of that in the freezer for ...
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Freeze a 24 oz can. It will bulge out. Put it in a freezer bag. Pack it in the middle of your sleeping bag. Wrap your sleeping bag with your insulated pad. Throw all of that in the freezer for ...