This square casserole dish is made from high quality heat resistant glass Simax which is resistant to temperatures from minus 40 °C to plus 300°C. It can be used for baking, stewing and roasting. This product can be washed in the dishwasher. Thanks to high durability of our glass products, the casserole looks like new even after multiple use. It is approved for contact with food both in household and professional premises. All products are controlled according the Health and Safety regulations of Czech Republic by an independent authority. All products are made from glass containing no Cadmium or Lead. Please let it cool down slowly and wash with non abrasive materials.