Officially licensed color changing, heat-sensitive ceramic mug Heat-activation reveals hidden image Holds 11 fl oz Made in the USA with imported parts PLEASE NOTE - Handwash only. Do not use in dishwasher or microwave. Bronze age Superman breaks free of the chains of injustice while you break free of fatigue with your morning cup of coffee. This Morphing Mugs Heat-Sensitive Mug reveals the Man of Steel in front of a background of vintage comic book panels. On the other side, the classic Superman logo appears with some of the most iconic Superman covers. The exterior of this officially licensed 11oz mug transforms from black as hot liquid is added, revealing the hidden image in full vivid colors.