ECOOPRO Winter Sleeping Bag- Outdoor Camping, Backpacking & Hiking - Fit for Kids, Teens and Adults - Lightweight, Waterproof & Compact Blue 100% nylon ripstop with fill 100% eiderdown. Nylon cover and polyester lining; not machine washable. For temperatures -20 F to 40 F. Fits most heights up to 6.3 ft.; Dimensions: 90(83+7.9) x 35 in. Fiber lock prevents insulation from shifting, increasing durability, thermo lock reduces heat loss through zipper.