Material: 100% Melamine Similar as porcelain, Smooth surface & Unbreakable. Dishwasher safe. Easy washing and hard broken, please don’t use any steel scrubber. Not suitable for microwave. Non toxic and durable use, endurable of acid.Heat resistant, safe temperature scope: – 30◦C – ± 100◦C.Food grade, Environment protection, safety and health, can pass all food level test. Low thermal conductivity.Feature: Eco – Friendly.