This 30 oz black stainless steel polar camel travel mug feature double-wall vacuum insulation. The mug has a narrower bottom to fit most standard cup holders. It is 2X heat & cold resistant compared to a normal tumblers. It is pre designed with a logo jet UV picture design. The design is a limited addition for we can no longer do this style on this style mug. We can do it similar on a white or stainless steel design is in sublimatable gifts. " It is NOT recommended for dishwasher use. Prolonged dishwasher use will break down the materials used to keep your beverages hot and/or cold for hours. It can also break down the sealant used to preserve the design on the tumbler.