1Polyester Pongee and Hollow Cotton: Outdoor camping sleeping bag with hat, selected 190T polyester pongee and hollow cotton, soft and comfortable material, providing good sleeping experience. 2Easy to Collect and Use: With two way zipper and lint free hook and loop fasteners, this sleeping bag is easy to collect and use. 3Advantages: This sleeping bag is soft and breathable, machine washable, reusable, clean and sanitary, and it can be used as sleeping bag and quilt. 4Wide Range of Application: This sleeping bag is suitable for outdoor camping, picnic, office nap, household daily use, etc. 5With Storage Bag: This backpacking sleeping bag is delivered with a storage bag for easy storage and it is ultralight and portable.