This Mummy Sleeping Bag -20 Degrees Wide- Blue-Navy, manufacturered by Alps Mountaineering, is listed with an MPN of 4717902. learwater Blue/Navy - +20 WideManufacture ID: 4717902The Clearwater series sleeping bags are made with MicroX+ insulation. MicroX+ Insulation consists of multiple denier staple-length fibers that have a siliconized finish for maximum insulation, loft, and compactness. It is an ultra lightweight insulation that has a tremendous weight-to-warmth ratio. The Clearwater uses a 2-layer offset construction, sometimes called a bag within a bag. The contoured hood and mummy shape helps seal up your warmth and keep you warmer. The Clearwater is a great backpacking sleeping bag to take along on your hikes that won?t take up all the space in your pack or weigh you down. Features:- MicroX+ 2 layer Offset- Zipper Baffle- Contoured Hood- Compression Stuff Sack Included Specifications:- Outer Material: 210T Nylon Ripstop- Outer Color: Blue/Navy- Liner Fabric: 210T Polyester- Liner Color: Black- Trim Color: Blue- Shape: Mummy- Zipper: #8 Separating - 20 Degree - Wide - Dimensions: 36 x 84 - Fill Weight: 35 oz. - Bag Weigth: 3 lb. 11 oz.