Crafted from double walled stainless steel, your drink will stay cold for hours, even outside in the hot sun. Its interior also prevents condensation, so your hands will stay dry holding this tumbler. Hot drinks will also maintain their temperatures for long periods in this glass. This 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.