Suitable for camping or without the use of fixed water storage facilities, emergency water solve practical problems. Its capsule material is a thermoplastic polyurethane coating cloth bag which has high strength, light weight, non-toxic, tasteless, water pollution, aging resistance and good water resistance and other characteristics, but this bag also has a good shape, easy to water, packaging simple, anhydrous foldable characteristics, can play iron and plastic containers can not match advantage.