Personalized Nurse Mug, 15 oz. Stainless Steel Polar Camel Mugs feature doubl-wall, vacuum insulation with a clear, slider lid. They are 2X heat and cold resistant compared to other tumblers. Polar Camels are made from 18/8 gauge stainless steel (18% chromium/8% nickel) - also known as Type 304 Food Grade. Cleaning Instructions: Not recommended for dishwashers, hand wash only. Length: 4 7/8" Height: 4 7/8" Width: 3 3/8" Thickness: 1/8" Overall Size: 4 7/8"(L) x 4 7/8"(H) x 3 3/8" diameter