1.Highquality material: Outer layer polyester, inner layer polyester, filled with hollow cotton, warm, comfortable and durable. 2.Weatherproof design: Keeps warm even under extreme conditions and prevents moisture, provides maximum comfort and warmth, and sleeping bag with double zipper, which can be operated both inside and outside, more practical and comfortable. 3.Humanoid design: The leg of the humanoid sleeping bag is designed according to the reverse structure of the human foot structure. The design of the fingertip opening is practical for the hand to pick up the object, the toes can be opened, the air can be opened when it is overheated. The leg can walk and take any sleeping position, the feet loosen and no binding. 4.Userfriendly design: Easy to wear, retaining strap design, greatly improved windproof effect, reduces the convection of cold outside air, so that the sleeping bag can stay warm. packaging, simply flatten and fold evenly, put in a sleeping bag.