Heat Sensitive Math Mug Color Changing Coffee Featuring Famous Mathematical Formulas For Teacher Student black 301-400ml

Description

High-quality material: Made of high-grade thick ceramic material, stylish in shape and exquisite in workmanship, making the surface more durable This cup has printing on both sides, you can clearly see the pattern on it when pouring hot water It is recommended not to use a dishwasher to clean, but to protect the film on the cup by hand washing Our cups will change with the temperature, unique personality and fashion