Harry Potter mug with heat changing Marauder's Map in black

"I solemnly swear that I am up to no good" is the line that captured all Harry Potter fan's mischevious souls! Featuring also Hogwarts student's footprints on the back, this mug by Half Moon Bay will magically reveal the Marauder's Map by Messers Moony, Wormtail, Padfoot and Prongs once hot liquid is poured into it. Once you have finished the last drop of your drink, close the map by saying "Mischief Managed", otherwise anyone can drink from it!    

Description Height 10.5 cm, Length 13 cm, Width 9.5 cm. Mug measures at Height 10 cm, Width 13 cm, Volume 400 ml. The material is stoneware with thermochromic pigments. Gift packaging made of cardboard. Special Care Instruction - Not suitable for dishwasher or microwave use, hand wash only.