1Outer Material: The outer material of the backpacking sleeping bag is made of 190T Pongee waterproof fabric, which is silky soft to the touch and no longer makes the sleeping bag feel hard to the touch. 2Wide Range of Uses: Suitable for indoor recreation, camping, office naps, outdoor adventures and other cool weather sleeping bags. 3Compact and Foldable:The backpacking sleeping bag can be folded for storage, small in size, does not take up space, can be fully unfolded, and can be directly pulled apart as a quilt cover or sleeping pad. 4Filling Material: Cool weather sleeping bag internal filling is made of hollow cotton for long lasting warmth, machine washable, lightweight and easy to carry. 5Premium Interior: Cold weather sleeping bag with digital printing, silky feel experience, no odor, no irritation, can be quickly heated, so that the sleeping bag is no longer cold!