Made of high quality stoneware (ceramics), good high temperature resistant and heat resistant, acid and alkali resistant. Four different dimensions for Korean Dolsot bowl: 800ml/27.0oz - Dia:15cm/5.9inch, H: 7cm/2.8inch, 1100ml/37.2oz - Dia:16.5cm/6.5inch, H: 8cm/3.2inch, 1500ml/50.7oz - Dia:18cm/7.1inch, H: 9cm/3.5inch, 2250ml/76.1oz - Dia:19cm/7.5inch, H: 10cm/3.9inch. It doesn't boil as fast as other clay cooking pot but because it has good thermal conductivity once it boils the heat lasts for a long time so you can eat the food warmly. Safe to use on stovetop, oven and microwave. Dishwasher safe. Perfect for creating hot and delicious sizzling bibimbaps,rice and serving stews or soups, any Korean Food you like!