1 made of 100% silicone 2 got the FDA&LFGB approved 3 odorless,flexible,heat-resistant,non-toxic, unbreakable, skid-proof ... choiceFood Grade Silicone Milk Bottle Cover1) made from food grade silicone,nontoxic,tasteless & odorless2) Heat-resistant, skid-proof,flexible,nondeformable,easy ... are factory and able to offer better price; 3. High-grade material:we import material from South Korea,Europe.Food ...