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. Optional slide slide and straws available at an extra cost.