Polar Camel 12 oz. Stemless Insulated Wine Glass w/Lid. features double-wall vacuum insulation with a clear lid. 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. This item is print-on-demand. Please allow for an additional 2-3 days for your order to ship. Print-on-demand items are non-returnable except in the case of an item defect.