Bring back the magic of youth with a custom color-changing mug. Fill this mug up with 11oz of any hot beverage, and watch the black coating fade to reveal a 11oz Height, in 3.74 Diameter, in 3.15 print thanks to the heat-reactive design. Each custom color-changing mug comes with a durable ceramic construction with a glossy finish. .: Material: Durable ceramic with a glossy finish .: One size custom color changing mug : 11oz (0.33 l) .: Custom color-changing mug with heat-reactive design .: Black C-shaped easy-grip handle .: Each custom color-changing mug features white interior/black exterior .: Please note: Wash only by hand. .: Please note: This custom color-changing mug is not suitable for microwaving Image by [Allies Interactive / Shutterstock]