Images are printed on the Porcelain Mug (80% porcelain - 20% ceramic) with the Sublimation Printing (heat printing) System. Our products are sent with Styrofoam Foam and Strong Packaging Method to Prevent Cargo Breaks. We Recommend You Hand Wash For Long-Lasting Use. (High Temperature and Chemical Substances in the Dishwasher Will Damage the Printing Quality.) Printing is Applied to Both Surfaces of the Glass. Product Dimensions Product Height: 9-5 cm Product Diameter: 8 cm +/- 2-5% Pixel Color and Print Variations May Occur