US Military ACU Bivy Cover Modular Sleep System Outer Shell UCP Digital USGI Shell for Sleeping Bag

- Nylon - Made in the USA - 100 percent water/wind proof outer layer. Designed to enclose patrol and intermediate cold weather sleeping bag for the complete modular sleep system. - Nonflammable, machine washable. - 2 way nylon zipper that allows for top or bottom ventilation (the zippers are non locking sliders which self repairs if jammed or snagged). Can be used alone for warmer temperatures.