A few decades of manufacturing experience,ultralight materials and our ongoing search for best outdoor solutions make our down filled sleeping bags lightweight and user-friendly. waterproof Durable water repellent camping sleeping bags for adults feature 30D/320T ripstop nylon shell fabric. Two way YKK zippers has an antisnag slider to reduce snagging. velcro,drawstring and horizontal baffles. Insulated draft tube ensures warm air stays in, cool air stays out. 3D hood closely to your head to keep out cold air. Hanging loops so you can store and dry your sleeping bag easily.