Who doesn't love a good surprise? With this color changing coffee mug, you're definitely in for a great one. This one of a kind Butterfly Fibromyalgia Awareness mug has a black glossy 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.

• Ceramic
• Black glossy finish when cold
• Reveals the print when exposed to hot liquids
• Dimensions: height - 3.54'' (8.9 cm), diameter - 3.35" (8.5 cm)

Note that in some instances the coating might not be 100% opaque and an outline of the design might peek through a little. You shouldn't put mugs in a microwave or dishwasher since it can damage the coating.