What are the parts of the bottle made of?

⦁ POLYPROPYLENE (PP) Bottle, Cap, Hood, Teat Pin
⦁ SILICONE RUBBER Teat Sterilisation Methods – Microwave, Steam, Boiling, Chemical, Autoclave Parts which CANNOT be autoclaved
Heat Resistance: BOTTLE 110 degrees C
TEAT, CAP, HOOD, TEAT PIN 120 degrees C