TUZ Matte Black Magic Mug

Who doesn't love a good surprise? With this color changing coffee mug, you're definitely in for a great one. This mug has a black matte finish when it's empty, but when it comes into contact with a hot beverage, the mug gets everyone's attention by calling out "Hey", with the elegant response, "Tuz." • Ceramic • Black matte finish when cold • Reveals the print when exposed to hot liquids • NOT dishwasher or microwave safe Note that in some instances the coating might not be 100% opaque and an outline of the design might peek through a little. Also, you shouldn't put the mugs in a microwave or dishwasher since it can damage the coating.