Downright Voyager 20F Down Mummy Sleeping BagDownright Voyager 20F Down Mummy Sleeping Bag is made up of the latest technology and development. The material is made of Rip-Stop nylon which is very light weight. High loft premium 550+ fill power has natural Down insulation. The bag is wind and water resistant which is valuable in every climate. The contoured hood and box foot adds comfort and warmth in the zipper. The most important thing is the chest collar and the draft tube which reduce heat loss through zipper and hood. The advantage of having this bag is that it is self repaired. It is having an anti-snag tape that leads to temperature regulation. The wall baffles prevents shifting of Down. So Downright Voyager 20F Down Mummy Sleeping Bag makes carrying and storage easy.