This Custom White Steel Stemless Wine Tumbler is a modern take for appreciative wine enthusiasts everywhere! Glass is made with a double wall construction so that body temperature does not affect the contents in your glass, and a flat bottom to avoid it from tipping over. Personalize each line with up to ten characters of choice. Crafted in double-insulated stainless steel, it keeps liquids at the right temperature and boasts a lid to prevent spills.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. Wine Glasses are BPA and lead free. Polar Camels are made from 18/8 gauge stainless steel (18% chromium/8% nickel) - also known at Type 304 Food Grade.