Features: Water-resistant ripstop polyester fabric on outer shell. Filled with two layers hollow fiber, warmer, lighter and more comfortable. Drawstring hood and collar for additional protection. Storage bag design for collecting personal articles (cell phone, etc). Two-way zipper design allows for splice with another sleeping bag. The bottom can be unzipped to adjust temperature in sleeping bag. Special designed hanging belt at bottom for dry easily. Come with a compression storage bag, convenient to carry. Suitable for camping, hiking, traveling and household.