Designed to keep your beverage hot up to 5 hours and cold for 15 hours, the Sherpa is an 11oz insulated vacuum tumbler that also doubles as a 12oz can insulator. Its double-wall construction features an 18/8 grade Stainless Steel inner wall, and a Stainless Steel outer wall. Features clear, press-on lid with slide closure..: Double-wall construction.: One Size: 11oz (0.32 l).: Material: stainless steel .: BPA free.: Vacuum insulated.: Clear, press-on lid with slide closure