Resh Heat-Resistant Glass Food Storage Containers Set of 2: 1100ml and 510ml (The 510ml container fits inside the 1100ml container) Microwave & Oven Safe. Made of glass, so it's resistant to stains and odors, making it convenient for everything from storage to cooking. ● Container Body Product Name / Heat-Resistant Glass Utensil Use / For Oven and Microwave Heat Resistance / 120 degrees Celsius ● Lid Material / Body: Polypropylene Heat Resistance 120 degrees Celsius Cold Resistance -20 degrees Celsius Gasket: Silicone Rubber Heat Resistance 200 degrees Celsius Cold Resistance -20 degrees Celsius Retail Price: ¥1760 and up