This is a REI sleeping bag designed for backpacking in cold weather conditions. The bag is suitable for users up to 6’6 in height and has an ultralight design. The exterior is made of Pertex Nylon in yellow and black colors, while the interior lining is 100% nylon. The fill material is polyester, and it is a long size sleeping bag. It weighs 2 lbs 2ozs. It has a backpack bag and comes in a Stufsack. Excellent condition, Never used, Brand new.