Fabric: 400T waterproof nylon fabricFilling: 95% goose down/95% white duck downSize: 210cm X 80cmThis sleeping bag is pure black. There are 7 models in total, namely 600g, 800g, 1000g, 1200g, 1500g, 1800g and 2000g.The 600g sleeping bag is suitable for use in an environment of 0 to 15 degrees Celsius.The 800-gram sleeping bag is suitable for use in an environment of -5 to 10 degrees Celsius.The 1000-gram sleeping bag is suitable for use in an environment of -10 to 5 degrees Celsius.The 1200g sleeping bag is suitable for use at -15 to 0 degrees Celsius.The 1500g sleeping bag is suitable for use in an environment of -20 to -5 degrees Celsius.The 1800g sleeping bag is suitable for use in an environment of -25 to -10 degrees Celsius.The 2000g sleeping bag is suitable for use in an environment of -40 to -25 degrees Celsius.This sleeping bag uses waterproof nylon fabric, so you don't have to worry about being unable to use it in a humid environment.The bottom of the sleeping bag is designed with a zipper, which can be opened at will. When the weather is cold, it is closed and used to keep warm and comfortable. It is used when the weather is hot, breathable and comfortable.The head of the sleeping bag is designed with an elastic cord, which can adjust the elasticity of the hat at will to prevent the invasion of cold air.The sleeping bag can be opened as a whole, and can be used as a duvet or a duvet cushion.Note: This sleeping bag can be machine washed, but it cannot be rinsed or ironed.If the sleeping bag is dirty, it is recommended to dry clean or wipe it with a damp cloth.