Item Type: Temperature Color Changing Cup_x000D_ Material: Ceramic_x000D_ _x000D_ Size: Cup Diameter: Approx. 9cm / 3.5in_x000D_ Cup Height: Approx. 3.8cm / 1.5in_x000D_ Full Water Capacity: 70ml_x000D_ Weight: Approx. 130 g / 4.6 oz_x000D_ _x000D_ Discoloration: Cold feeling turns blue, hot feeling turns pink_x000D_ Instructions for use:_x000D_ 1. Do not let hard objects or glass touch each other._x000D_ 2. Please gently put it on the table._x000D_ 3. If the temperature may change suddenly, please do not add hot water!_x000D_ 4. Do not use microwave ovens, dishwashers or dryers._x000D_ 5. If possible, separate it from other tableware. It is recommended to clean it gently with a sponge._x000D_ 6. After cleaning, turn it upside down to remove water, and then wipe it with a thick cotton cloth._x000D_ 7. Do not stack. (When stacking, please put a soft cloth between them) 1The color of this flower?patterned cup changes when the cup reaches the required temperature. 2Use non?toxic, heat?sensitive materials, printed on the cup body, feel free to use. 3Cold change requires ice water to change color. The lower the water temperature, the more intense the discoloration effect. The longer the color change time, ice water below 18 degrees is the best. 4Cold change cup: Cold change requires ice water to change color, hot water at room temperature cannot change color. The lower the water temperature, the stronger the discoloration effect and the longer the discoloration time. Ice water below 18 degrees is the best. 5Heat change cup: Heat change requires hot water to change color, ice water at room temperature cannot change color. The higher the water temperature, the stronger the discoloration effect and the longer the discoloration time. The hot water below 50 degrees is the best.1. Please allow 0?2 cm error due to manual measurement. Thanks for your understanding. _x000D_ 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.1 xCup