The square roaster 5.20L is made from high quality heat resistant glass Simax which is resistant to temperatures from minus 40 degree C to plus 300 degree C. This is ideal for preparing the lunch or dinner for more larger families. It is ideal for baking, stewing and roasting. They are suitable for all types of ovens, dishwasher or for the storing of the remaining food in the refrigerator. It s 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 the independent controllers. They are made from glass containing no Cadmium or Lead.