Made of platinum based liquid (lsr) 100-percent food-grade silicone. Silicone injected molds allow for greater details, flexibility, longer wear. Glossy surface ensures an easy release for all types of products used. Ultra flexible for easy extraction, odorless and smokeless; safe to use in the oven, microwave, fridge and freezer (-60 C to + 230 C); dishwasher-safe.