The 13oz/400ml Smart LED Vacuum Insulated Bottle is made of inner 304 and outer 201 stainless steel, Screen smart temperature display to understand the internal temperature of liquid. This stainless steel water bottle has double insulating wall that optimally keeps the temperature hot and cold. Non-slip silicone base and phone stand, as well as a handle hanging hook make this Vacuum cup a great gift to your family, friends, workmates and more.