20 oz. Stainless Steel Polar Camel Travel Mug features double-wall vacuum insulation with a clear lid. The mug has a narrower bottom to fit most standardd cup holders. It is 2X heat & cold resistant compared to a normal travel mug. Polar Camels are made from 18/8 gauge stainless steel (18% chromium/8% nickel) - also known as Type 304 Food Grade. 9 3/4" circumference x 3 1/2"(H). Not recommended for dishwashers, hand wash only. You can also order different colors of silicone!