The Avent Airflex feeding bottle 125ml is equiped with an in-built-colic valve and a soft naturally shaped teat which latch-on like the breast therefore promoting natural feeding action.
The Avent Airflex Feeding bottle uses an Airflex valve which works with baby natural feeding rhytm. Your baby controls milk flow, which can help reduce overeating and spit up. As your baby feeds the built-in valve flexes to allow air into the bottle to prevent vacuum build-up. Air bubbles move away from the teat and into the bottle and not into baby tummy