Laser Engraved - Using the latest laser engraving technology, you can be confident your product will be durable and of the highest quality. All products we handle are engraved in the USA and safe for consumer use. Tumbler Specs - 20 oz. Stainless Steel Mug features double-wall, vacuum insulation with a clear, slider lid. It is 2X heat and cold resistant compared to other tumblers. Recommendations - Not recommended for dishwashers, hand wash only. Custom Made - Make your design unique for any occasion, such as weddings, birthdays, valentines, or any other special event. Use our custom menu to edit and make your design unique! Packaging - To make sure our product arrives safely in your hands, we process and package this product with extra care!