3 PCS Silicone Letter Molds, Non-Stick Number and Letter Fondant Molds for Chocolate, Candy, Cake Decoration, Cupcake Topper. You can rinse it with soapy water or put it into the dishwasher. Temperature Range: These letter chocolate molds can withstand temperatures from -40°F to 446°F and are safe in microwave, oven, refrigerator, freezer.