This 20 oz. black stainless steel Polar Camel pilsner tumbler features double-wall vacuum insulation with a clear lid. The mug has a narrower bottom to fit most standard cup holders. It is 2X heat & cold resistant compared to a normal tumblers. This item is laser engraved leaving a silver stainless steel show-through imprint. All tumblers are individually packaged. This is the perfect product for keeping your drinks cool while traveling, outside, or even while indoors.