

As your baby feeds, the unique skirt on the AVENT nipple flexes to allow air into the bottle, preventing any vacuum build-up.
This allows your baby to suckle almost as at the breast. Listen for the gentle whistling sound and watch the air bubbles burst on the surface of the milk. That's your guarantee that the air is being released into the bottle — not into your baby's tummy.
Teat Size - 1mth+ Slow Flow 2 holes.
Read the full Clinical Study