Morphing Magic: Witness your Gryffindor allegiance transform as hot liquid reveals your personalized image in vivid colors Personalize Your House Pride: Add your custom photo to join Harry Potter, Hermione, and Dumbledore in the Gryffindor house Heat-Sensitive Ceramic: Crafted with thermal reactive ceramic, this 11oz mug changes color with heat Durable & Reusable: Made of sturdy, lead-free, BPA-free ceramic, this mug is designed for long-lasting use with caution Official Harry Potter License: Officially licensed, this mug is a must-have for any Gryffindor fan or Harry Potter enthusiast Pledge your allegiance to Gryffindor with this personalized Morphing Mugs heat-sensitive, color changing mug. Add your custom photo and find yourself a member of the house of Harry Potter, Hermione Granger, and Albus Dumbledore. The exterior of this 11oz mug transforms from black as hot liquid is added, revealing the image in full vivid colors.

The exterior of this officially licensed 11oz mug transforms from black as hot liquid is added, revealing the hidden image in full vivid colors.

While this mug may be used in the dishwasher or microwave, for the longest lasting, highest quality product, we strongly recommend against it.