Stainless Steel Polar Camel Pilsner features double-wall vacuum insulation with a clear lid. This mug has a narrower bottom to fit most standard cup holders. It is 2X heat & cold resistant compared to a normal tumblers. Polar Camels are made from 18/8 gauge stainless steel (18% chromium/8% nickel) - also known as Type 304 Food Grade. 3" x 7 3/4" and 1/16" thick.