The ARDESTO CaldoCup thermal mug is made of high-quality stainless steel with silicone inserts in an ergonomic design. The thermal mug opening mechanism is a convenient button-valve. The volume is 450 ml. The thermal mug keeps the temperature of a hot drink for 8 h, a cold one for 12 h. Does not contain BPA. It is not recommended to wash in the dishwasher.