Using your personalized custom coffee mug is easy. You can fill it with your favorite beverage like coffee, tea, water, or beer. To keep it in good condition, don't use detergent when cleaning. Instead, use a soft cloth or sponge. Also, stay away from hard cleansing tools, harsh abrasives, or chemicals as they can damage the print on the mug. The good news is that it's safe to use in the microwave and dishwasher. This mug was printed in the USA with copyrighted artwork, so you're getting a unique and high - quality product.