CAFFEINE CRAZY — Color Changing Mug Pour that bubbly… or coffee. The Caffeine Crazy Mug is for the Future fans, the 2AM thinkers, the people running on caffeine, bad decisions, and one more song before bed. Cold, it keeps it lowkey. Add something hot and the design starts to show — because apparently even the mug needs a little caffeine before it wakes up. Coffee in the morning. Tea at night. Whatever's in the cup, just make sure the playlist is right. Product Details 11 oz ceramic mug Heat-reactive color-changing exterior Design appears when you pour in a hot drink Glossy wraparound print Black exterior with white interior Microwave safe Lead- and BPA-free Hand wash recommended to keep the color-changing effect fresh Care Hand wash only. Threadliner — wear the culture, drink the caffeine.