Our moulds for clay art are made of food-grade silicone. These silicon moulds for clay art can be used safely in ovens, microwaves, and freezers. 2. These clay moulds for crafts are heat resistant up to temperatures -40 to 220 degrees Celsius. 3. These fondant mould for cake decorating are easy to peel off, it is best to apply a little butter or oil before making. These fondant moulds are easy to clean, soft, and reusable. 4. This Silicone mold is not only a perfect cake fondant decorating tool but also suitable for candy, jelly, soap, chocolate, wax, ice, epoxy resin, polymer clay, and various types of molded clay.5. Material: Silicone, Approximate Size of Rose Mold For Clay Craft 5x5x1.3 cm.