Walking Dead Color Changing Cup

Features:
Heat sensitive material on the mug surface turns color when hot liquid is poured in Capacity: 350ml
Material: Ceramic 
Size: 8.2 * 9.6cm 

Notes: 
Do not microwave
Don't expose under the sunshine for a long time 
Don't scrape on the printing with sharp tools 
Wash with hand, not suitable for dishwasher machine. 
Water temperature should be over 70 Celsius /158Fahrenheit