We wasted so much hot water when we got our first sample of this mug! We kept filling it up, letting it cool down, filling it up …
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.
• Ceramic • Black matte finish when cold • DO NOT put in the microwave • DO NOT put in the dishwasher • 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 the black coating might not be 100% opaque and an vague outline of the design does peek through a little. Also, you shouldn't put the mugs in a microwave or dishwasher since it can damage the coating.