Silicone molds can be used safely in ovens, microwaves, and freezers. The non- silicone mold is easy to peel off, it is better to apply a little butter or oil before making. The heat-resistant temperature range is -40 to 220 degrees Celsius/-40 to 445 degrees Fahrenheit. Ideal for making Mother's Day cake for mothers as gifts. Our Fondant Cake Molds are made of food grade silicone.