Maymom Dome Caps Compatible with Avent Natural Bottles, Avent PP Bottles or Natural Glass Bottles; Not for Avent Classic Dome; Not Original Avent Replacement Parts - Yahoo Shopping
Philips AVENT Classic+ vs Natural Feeding Bottles - YouTube
The difference between the Philips Avent Natural Bottles to the Anti-Colic bottles lie in its design. See the difference here: https://philips.to/2yIxbUh | By Philips Avent | Facebook
Philips Avent Natural Glass Baby Bottle: Lead-free, 21 ppm Cadmium in the silicone nipple (Cadmium is a known carcinogen, but this is considered safe by all current standards)