Kara Zor-El is sweet but mighty on this DC Comics Justice League Chibi Supergirl Heat-Sensitive Morphing Mug. Add hot liquid and watch the 11-ounce ceramic mug turn from black to the vibrant blues, yellows, and reds of the adorable Supergirl image! Drink your morning coffee while Supergirl swoops around the sky, making sure your day starts free of injustice. Hand wash only. Not dishwasher safe. Do not microwave.