1.Made of BPA, PVC free and eco-friendly 100% food-grade silicone with FDA and LFGB certification. 2.The bakeware molds are heat-resistant up to 450 degrees Fahrenheit and freezer safe to a -40 degrees Fahrenheit. 3. Suitable for making moon cake, cake, bread, mousse, ice, jelly, prepared foods, chocolate, soap and other crafts.