My Black Coffee is Beautiful Black Rim

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 a beautiful print that'll always make you smile when having your drink of choice. • Black matte finish when cold • Reveals the print when exposed to hot liquids Also, you shouldn't put the mugs in a microwave or dishwasher since it can damage the coating.