Harry Potter – Hogwarts Crest Heat Changing Mug

Prepare to be amazed by our range of fantastic heat changing mugs. Simply pour your favourite hot beverage in and watch the design magically change before your eyes. As the contents of the mug cool the design will change back to its original state. This Harry Potter mug shows the Hogwarts crest on a black background which changes to reveal a silhouette of the Hogwarts castle in the background.