Heat Sensitive Color Changing Black / White Grounding Switch Porcelain Coffee Mug/ Cup HLI-81319

Product Features: : Coffee is lonely without mugs, I am lonely without you! When put the hot water into the cup, the cup's outer wall will gradually change from black to white, while black hidden, it will show up some English letters pattern in front of you, black pattern will disappear When the mug cooled slowly, it will gradually change to black, English letters disappear again, black pattern reappear Material: High-Grade Porcelain Color: As shown in the picture Height: 94mm/ 3.666inch Diameter: ----Outer: 77mm/ 3.003inch ----Inner: 71mm/ 2.769inch Net Weight: 253 g/ 8.86oz Note: ­----Don't expose under the sunshine for a long time ----Don't scrape on the printing with sharp and hard tools ----Don't scald yourself ----Wash with hand, not suitable in dishwasher machine and heart-disinfection machine ----Magic printing will appear once you put the liquid over 70℃ Product Specifications:: Package Contents:: * 1 x Color Changing Mug