The Philips Avent Classic + Baby Bottle’s Airflex venting system and textured teat are designed to minimise feeding interruption and discomfort. With the integrated anti-colic valve, air is vented into the bottle and away from baby’s tummy. Teat design proven to prevent teat collapse and associated air ingestion and feeding interruptions. At 2 weeks of age, babies fed with a Philips Avent bottle showed less colic and significantly less fussing at night compared to babies fed with another competitor bottle.