I believe it's lacquerware, but I'm not certain, so please understand. One of the three was put in the microwave, and it has something like scorching and a bulge on the inside. Diameter 11cm, height 7cm. Please note that these are amateur measurements, so there may be some error. Set of 3 smooth, glossy red lacquerware bowls. - Quantity: 3 - Color: Red - Interior Condition: Smooth finish - Interior Condition: Glossy Thank you for looking.