Features: 1. Turn your dinner and drinks night into a magic show! Astonish your guests with a whimsical magic trick that makes vibrant colorful blossoms appear from thin air, as you fill up these cups with your most prized sake. 2. How the reaction works: DUAL (HOT AND COLD) - Will reacts to BOTH HOT AND COLD liquids. All Sakura, Peach, and Plum will bloom LIGHT PINK when HOT, and a detailed BLUE when it is COLD. 3. Color Changing Feature: The color changes when the temperature is above 103F, and the color changes when the temperature is below 70.5F. (Hot water below 50 degC is the best, cold water below 18 degC is the best) 4. The pigment is: temperature-sensitive materials are painted on the cup body and coated with a clear glaze, the materials used are heat-sensitive materials, high temperature resistance of 608F, BPA-free, safe and healthy. 5. High quality cup, perfect for gift giving or as a special treat for yourself. 6. In order to keep the color changing pattern functionally well and longer. Please do not put it in microwave or dishwasher. Handwash recommended as the special craftmanship. Notice: 1. Actual color may be slightly different from the image due to different monitor and light effect. Please allow 1-3cm deviation due to manual measurement. Specification: Material: ceramic Size: 9.0cm in diameter, 3.4cm in height Capacity: 70ml includes: 1 x cup