I Am Up to No Good Heat Sensitive Transforming Color Changing Mug
Product Features HEAT Activating – Activate the magic spell by pouring hot liquid in and watching the transformation take place. The H P Mischief Managed collectors map will magically appear. I Solemnly Swear That I Am Up To No Good MISCHIEF MANAGED • Very HIGH QUALITY design! Mug is not microwave safe, hand wash only!