This mug has a matte black finish when it's empty, but when it comes into contact with a hot beverage, the mug reveals a cheeky print that'll always make you smile.
• Ceramic • Matte black finish when cold • Reveals the print when exposed to hot liquids • Dimensions: height - 3.85" (9.8 cm), diameter - 3.35" (8.5 cm) • Made in China. Printed in Europe
Note that in some instances the coating might not be 100% opaque and an outline of the design might peek through a little. Don't put the mugs in a microwave or dishwasher, it will degrade the coating and ruin the surprise.