Harry Potter Heat Changing Mug - The Marauder's Map
- Printed with the sentence ' I Solemnly Swear I Am Up To No Good';
- The Marauder's Map appears when the mug is filled with hot liquid;
- Inside Mug Bottom is printed with the saying that closes the map - 'Mischief Managed';
- Approximate Capacity 400ml;
- Packed in a Harry Potter Gift Box;
- Not Suitable For Dishwasher or Microwave Use!