1. 100% food grade silicone 2. No abnormal odour or staining 3. Eco-Friendly, Softness, Non-stick ,Anti-dust 4. Flexible, lightweight and portable, easy to store and transport 5. Durable, long-standing, long life time 6. Hardness: according to customer’s request 7. Customer’s design are welcome 8. Reasonable price, high quality