1: 100% Food-grade silicone . 2: Non-stick , easy to separate, clean, eco-friendly,low carbon, can be recycled 3: simple and useful, Healthfulness,natural antibacterial,High strength softness,corrosion resistant and Adaptability 4: Not easy to damage,No crack,Resistance to extreme temperature,-40°C--230°C,(-40°F--446°F) 5:safety,Non-toxic, No smell , Heated evenly