This Harry Potter Half Moon Bay coffee mug is the perfect addition to any fan's collection. With its heat changing feature, the mug transforms to reveal the Marauders Map when hot liquid is poured in. The brown mug is adorned with the iconic map design and comes unused and boxed. It is a must-have for any Harry Potter enthusiast and makes for a great gift. The mug is made in China and is part of the franchise's TV, Films & Music theme, Warner Bros.