Harry Potter Thestrals Morphing Mugs Heat-Changing Drinkware - 11oz

Thestrals are only visible by those who have seen death. Except on this mug. You only have to pour hot liquid inside to reveal the Thestrals on this officially licensed Harry Potter Morphing Mug. 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 microwave, for the longest lasting, highest quality product, they strongly recommend against it.