1.Heat insulation,portable tubs 2.Folding waterproof fabric,stainless steel 3.Patent No.: ZL2007203106592 4.105cm ... *56cm*52cm Save space and waterPortable, folding, heat insulation, removable, detachableWear-resisting, pressure-resisting and long- ... used all the year round. Don't need to use electric heating.You can always carry easily when camping, traveling, business ...