The Paladone One Piece Heat Change Mug is a ceramic vessel designed for fans of the popular series who want a bit of surprise with their morning drink. It features a heat-sensitive coating that transforms the appearance of the mug when you pour in a hot beverage, revealing the iconic wanted posters from the show. With a capacity of 350ml, it holds a standard serving of coffee or tea. Because the heat-change effect is delicate, you should avoid using a microwave or dishwasher to keep the graphics in good condition, opting instead for gentle hand washing.