Design titled Chef hat Cooking & Food Heartbeat Gift. Ideal for all kitchen fans. For all who love baking, are foodies and like to eat. Birthday or Christmas Gift for men & women. Ceramic Black glossy finish when cold Reveals the print when exposed to hot liquids Dimensions: height - 3.54'' (8.9 cm), diameter - 3.35" (8.5 cm) Note that in some instances the coating might not be 100% opaque and an outline of the design might peek through a little. You shouldn't put mugs in a microwave or dishwasher since it can damage the coating.