The mighty amazon warrior, Princess Diana, is ready for battle! The 11-ounce Wonder Woman Power Grace Wisdom Morphing Mug transforms from black as hot liquid is added! Watch as the heat-activated process reveals the hidden image in full vivid colors! Hand wash only. Not dishwasher safe. Do not microwave. Measures approximately 5 inches x 5 inches x 4 inches. Ages 15 and up.