The sleeping bag is designed to be widened and thickened, with a limit temperature of 5 degrees, and filled with high-quality hollow cotton, making the sleeping bag more fluffy, softer, and warmer.The envelope-style sleeping bag can be spliced with shoulders and feet wide, in line with regular rest habits. The independent thermal insulation and wind-proof wall design on the chest can keep the inside of the 3-holding bag warm, even if it turns over.Polyester spun coated water-repellent fabric. The outer water-repellent fabric is softened and lined with super soft brushed cloth. It is not cold in winter and is more suitable for personal use.High-quality hollow cotton has good elasticity, good warmth retention and good air permeability. The product has good shape retention under pressure, anti-knotting, light weight, strong tensile resistance, washing resistance, not afraid of insects and frogs, mildew and moisture, and warmth retention rate is higher than cotton fiber Above 60%, the service life is more than 3 times longer.The whole sleeping bag is designed with a zipper and can be spread out. It can be used as a carpet for rest in the afternoon, or as a mattress for hotels and hotels. It is clean and convenient, and one bag is multi-purpose.