1 medical high-class LSR silicone materil, non-toxic,odorless,colorless, transparent and crystal-clear,heat-resistant to 250°C 300°C,.Easy to clean; maintain baby health 2.Nipple:medical high-class LSR silicone materil,heat-resistant,non-toxic,odorless,colorless, transparent and crystal-clear.Similar to mother's mammilla,and give baby a feel of comfortable and natural 3.accessory: including handle,ring,cap,and stopper.Using food-grade and non-toxic pp materil which is light,non-toxic,odorless,not easy to breakand heat=resistant to -20 120C, The surface is smooth and easy to clean,convenient to bring for children,maintain baby