1 ) 100% Silicone Mold Raw Food Grade Silicone 2 ) Non-stick , Stripping Easy , Easy To Clean , Environmentally Friendly, Low-carbon , Can Be Recycled ; 3 ) Simple And Practical , Health , Natural Antibacterial, Softness High Strength , Corrosion Resistance And Adaptability ; 4 ) Easy To Clean , Cracking , Durable , Superior Resistance To Extreme Temperatures , High Temperature 230 Degrees, The Low Temperature Of Minus 40 Degrees ; 5 ) Safe , Non-toxic , Odorless , Heat Evenly. Specification: 5.7*4.5*1.3cm