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Camping Fail at –4 °C: Military Sleep System Tested and Defeated

Temperatures plummeted to –4 °C with near-100 % humidity as I put a U.S. military sleep system to the ultimate test outdoors.
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Camping Fail at –4°C: Military Sleep System vs the Cold Night

With frost forming and the temperature dropping to –4°C (27°F) in 98% humidity, I set up outside determined to test the U.S. Military Sleep System. On paper, the triple-layer bivvy and bag should have ...