Philips Avent Airflex Teat uses a unique teat skirt with a one-way air valve that flexes to allow air into the bottle to prevent a vacuum, as milk flows through at a pace that baby chooses.
This allows for active, healthy feeding and reduces the occurrences of colic.
You may hear the Airflex valve working: the bubbles move away from the teat - that's the guarantee the air is going into the bottle, not into your baby's stomach. The breast-shaped teat promotes a good latch and makes it easier to alternate between breast and bottle.
The Airflex valve works with baby's natural suckling action: baby controls milk flow. Philips AVENT offers a complete range of interchangeable products. All products within the feeding range are designed to work with each other.