ACU Digital Camouflage;GoreTex, 100% water/wind proof outer layer.;Designed to enclose patrol and intermediate cold weather sleeping bag for the complete modular sleep system.;Non-flammable, 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.;Approximately 80 x 30