Who doesn't love a good surprise? With this color-changing coffee mug you definitely have a great mug. This mug has a black matte finish when empty. But when it comes into contact with a hot drink, the mug shows a nice print that will always make you smile when you enjoy your drink of choice.

 • ceramics
 • Height: 3.85 ″ (9.8 cm)
 • Diameter: 3.35 "(8.5 cm)
 • Black matt finish when cold
 • Reveals pressure when exposed to hot liquids
 • NOT dishwasher or microwave safe
 • Blank product from China

 Note that in some cases the coating may not be 100% opaque and an outline of the design may show a little through. Also, you shouldn't put the cups in a microwave or dishwasher, as this can damage the coating.