Caution: When using in the microwave, please make sure to heat the jar with the lid on. When storing frozen, please defrost with the defrost key or defrost in the refrigerator, and then heat it. After heating in the microwave, the body is very hot. Do not touch directly with bare hands. Please also prepare a rug on the table. Porous pottery is characterized by its low strength. Please handle with caution as it is prone to chips on edges and protrusions due to impacts. If you want to stick rice, soak the jar in warm water, then rub it off with a sponge. When storing other ingredients, the smell may remain. In addition, moisture may seep through items with a lot of juicy. After use, rinse with water as soon as possible and dry thoroughly before storing. Not dishwasher safe. Size: Diameter 4.5 inches (11.5 cm) x Height 3.0 inches (7.5 cm); Material: Ceramic. Capacity: Approx. 1 pair. Heating estimate: 2 to 2.5 minutes (varies depending on the amount of rice and microwave. )