“I solemnly swear that I am up to no good.” Just recite the phrase and tap your wand to learn the location of every inch of Hogwarts™. The exterior of this Morphing Mugs™ heat-sensitive, color changing mug transforms from black as hot liquid is added to reveal a full color image of the Marauder’s Map, along with the two magic phrases made for its use. Whatever you’re up to, this mug (and your morning coffee) will help insure that your mischief stays 100% managed.
The exterior of this officially licensed 11oz mug transforms from black as hot liquid is added, revealing the hidden image in full vivid colors.
- Officially licensed color changing, heat-sensitive ceramic mug
- Heat-activation reveals hidden image
- 11oz in size, weighs 1lb
- Designed and printed in the USA
- Do Not Microwave Not Dishwasher safe