Materials:
1.Cap:PP/heat resistace up to 110 degree Celsius.Dust and leakage proof,it won't leak even in any way you shake the bottle provided you covered the cap when you are reconstituting the milk for your baby.
2.Screw lid: PP/Heat resistance up to 110 degree Celsius. Unique design of automatic air vent and leakproof technology provides a more influent and comfortable feeding to your baby.
3.Air-vent valve:/Air-vent plate: PP/heat resistance up to 110 degree Celsius
  Reflux plate: Liquid silicone/heat resistance up to 180 degree Celsius Patented air vent and leak proof design can effectively avoid colic, and saves sucking efforts for baby and saves feeding time.
3.Nipple: liquid silicone/heat resistance up to 180 degree Celsius. The most breast-like structure and feeling nipple, with super ductibility and durable.
4. Body of bottle:PP/heat resistance up to 110 degree Celsius.Adopts baby's food-grade material,bisphenol-A free, odorless and nontoxic, easy-wash and durable.