Material: Ceramic fired stone, glaze-fired twice with a natural glaze. With free tray Perfect for making spicy tofu stew (soon Du Bu Jji Gae), soybean paste stew (Dwen Jang Jji Gae), kimchi stew (Kimchi Jji Gae), miso soup, etc. Able to retain heat (20°C - 400°C), so it keeps food warm for a very long time What's in box: Pot Bowl + Plastic Trivet - Material : Stoneware - Color : Black - Sizes : NO.2 ,13cm in diameter, 7cm in height NO.4 , 15cm in diameter, 8cm in height NO.6 ,18cm in diameter,10cm in height NO.8 ,20cm in diameter,12cm in height - Country of Origin : South Korea