I am 39 + Middle Finger Polar Wine Tumbler - 40th Birthday  12 oz. Stainless Steel Polar Camel Stemless Wine Glasses feature double-wall, vacuum insulation with a clear lid. They are 2X heat and cold resistant compared to glass or plastic wine glasses. Polar Camels are made from 18/8 gauge stainless steel (18% chromium/8% nickel) - also know as Type 304 Food Grade. Not recommended for dishwashers, hand wash only. Length: 3 1/2" Height: 4 3/8" Width: 3 1/2"