Easy to use, made from 100% food grade silicone. No greasing required, easy and convenient StorageCold & Heat resistance : -40 degree to 230 degreeGives shape to your sweet muffins and other desserts. Perfect for cup cakes, muffins, gelatine and desserts.Non-Stick surface and easy to clean. Safe for oven and microwave. Colours may vary.Country of origin : China