If you never miss an episode of The Simpsons at home, and this is the fourth time you've watched the whole series, this personalised magic mug is designed for you. You have more than 400 Simpsons characters to choose from. Once you've decided which ones you like best, you can add a name to each Simpson at the bottom. It's a great gift for the best family in the world! This mug is also a very special mug, as it looks black when cold, but when you pour in a hot liquid, you start to see the design it hides. It's an amazing mug to surprise anyone! The mug is microwave safe. Important: This mug is NOT dishwasher safe. It may lose the black colour of the surface.