Description

Reveal the secrets of the Marauder’s Map with this heat change mug!
When cold, the mug is majority black with footprints around it and text that reads ‘I solemnly swear that I am up to no good’.
Add your choice of hot drink, however, and the mug’s design will begin to change as the dark sections of the mug begin to look like the Marauder’s Map that is complete with Hogwarts castle and accompanying text, the text and footprints or the ‘cold’ design are still slightly visible against the map-like colour of the ‘hot’ design.

This is an officially licensed Harry Potter product and makes a great gift for Harry Potter fans.

Approximate capacity: 300ml