Protect your sleeping bag and yourself with this waterproof, breathable U.S. Military Bivy Cover. Genuine GORE-TEX protection. Sealed seams. Top-quality 2-way YKK zipper. Plus a mummy hood that can go over your head for total protection from the elements. In fairly moderate conditions you could sleep in this without a tent. Snaps to fit military ECWS, intermediate and modular bags.