This design is laser-etched directly into the tumbler. The artwork will not peel or scratch off. We recommend hand washing, but this product is dishwasher-safe. 30 oz. Stainless Steel Polar Camel Tumblers feature double-wall vacuum insulation with a clear lid. The mug has a narrower bottom to fit most standard cup holders. It is twice as heat- and cold-resistant compared to a normal tumbler.