Black Magic Mug
Color changing coffee mug, you're definitely in for a great one. This mug has a black matte finish when it's empty. Contact with a hot beverage, the mug reveals a print that'll always make you want rock out!
• Black matte finish when cold
• Reveals the print when exposed to hot liquids
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.