White Boycott Lifestyle 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 reveals how you really feel, which will be sure to make you smile when having your drink of choice.
Black matte 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 the USA and EU
Note that in some instances the coating might not be 100% opaque and an outline of the design might peek through a little. Also, we recommend NOT putting the mugs in a microwave or dishwasher since it can damage the coating.