Kelty Cosmic 20F Down Bag The Kelty Cosmic 20F Down Bag is a great way to keep the biting cold away and stay cozy. This sleeping bag is made from 5D Taffeta polyester, which ensures that it is sturdy and durable. Its differential cut ensures maximum warmth for a better sleep. The 58 in. dual slider locking zipper, wraps the bag around you snugly and securely. Its zipper also has a draft tube to prevent cold drafts from seeping in. The draft tube also has an anti-snag design, to ensure comfortable and chafe-free sleep. A form-fitting hood provides complete warmth to your head and shoulder areas. This bag comes with an included stuff sack to neatly store it and carry it around. The Kelty Cosmic 20F Down Bag is an ideal choice for those cold winter nights spent outdoors.