Product manual: 1. Envelope design, with the same width of shoulders and feet. The upper brim can be shrunk to wrap the head to prevent heat loss and play a role in keeping warm and cold; 2. The lining is made of soft T/C cloth, which has a good hand feeling; the outer waterproof fabric is softened, which is convenient for scrubbing (machine washable), and can effectively prevent humid air from entering when used in the field; 3. High-quality hollow cotton filling, soft and comfortable, strong warmth retention; high-quality zipper beside the sleeping bag, smooth and smooth. Unzip the zipper, the sleeping bag can be spread out and used as a quilt or floor mat. Precautions: 1. Prevent scratches, avoid long-term storage in places such as high humidity and high temperature, and can be washed with moderate temperature water; 2. After use in humid areas, it should be aired to keep the sleeping bag dry and clean; 3. When camping in the wild, pay attention to using fire to ensure the happiness and safety of outdoor recreation. Name: Summer envelope cotton sleeping bag Temperature scale: 5℃-15℃-20℃ Size: 190*30*70CM Fabric: 190T polyester spinning Lining: 170T Pongee Weight: about 1KG Purpose: It can be used alone, and can be fully expanded as a quilt or floor mat