A magical mug that reveals a character when hot water is poured in. The design appears when the mug's temperature exceeds 45 degrees Celsius. Product size: Approximately 8 x 9.5 cm Product weight: 0.27 kg Country of origin: Japan Material: Porcelain ＜Note＞ Although it is new and unused, there are scratches. (See photos 1 and 2)