This is a 20 oz. Stainless Steel Polar Camel Travel Tumbler Mug with a sublimated U.S Army Space & Missile Defense Command emblem. This tumbler features double-wall vacuum insulation with a clear slider lid. The mug has a narrower bottom to fit most standard cup holders. It is 2X heat & cold resistant compared to a normal travel mug and is lead free. Polar Camels are made from 18/8 gauge stainless steel (18% chromium/8% nickel) - also known as Type 304 Food Grade.