Description
At room temperature, the front of the glass shows a Marauder’s Map design while the back features the words “I solemnly swear I am up to no good†which is the password used by Harry Potter to open the iconic map from the film franchise.
When cold liquid is poured in, the glass transforms to reveal a wraparound map design. Once the drink is finished the glass returns to its original state as it warms back up to room temperature.