This Stainless Steel 20 oz. Polar Camel Pilsner with Clear Lid features double-wall vacuum insulation. The 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. Customize with your own photo or logo! We've customized this one with a favorite of ours, Twisted Brisket! Check them out at twistedbrisket.com and on Instagram @twistedbrisket !!