Harry Potter Azkaban Prison Colour Changing Mug

Celebrate the escape of Sirius Black™ from Azkaban™ every time you reach for your coffee with this Morphing Mugs™ heat-sensitive, color changing mug featuring the wanted wizard poster for the rogue wizard. The exterior of this 11oz mug transforms from black as hot liquid is added, revealing the hidden image in full vivid colors.

• Color changing, heat-sensitive ceramic mug
• Heat-activation reveals hidden image
• 11oz in size, weighs 1lb
• Authentic heat-sensitive mug