Locking milk in, and keeping air out, Philips Avent AirFree vent is designed to help your baby swallow less air when feeding and reduce colic . Ensuring a more comfortable experience for both you and your little one, specially designed teat stays full of milk, even when horizontal, so your baby can drink in a more natural, upright position. This helps aid digestion, and decrease issues like colic, gas, spit up, burping and reflux . The shape of the teat allows for a secure latch on, and the ribbed texture helps prevent teat collapse, for uninterrupted, comfortable feeding . We have a wide range of Philips Avent teats with different flow rates that you can use throughout your baby's development. The AirFree vent can be easily assembled with any Philips Avent Anti-colic and Classic bottle. Simply fill the Avent bottle with milk, place the AirFree vent over the rim, and screw on the teat. Tilt the bottle downwards once to fill the teat, and you're ready to go. Cleaning is a breeze, thanks to the bottle's wide-neck, and minimal parts. You can use your Philips Avent Anti-colic bottle with or without the AirFree vent. We designed Philips Avent Anti-colic bottle range so it's easy to mix and match tops and bottoms. This way you can progress easily from bottle, to training cup, to sippy cup, with fewer parts. orthodontic, collapsible teat on the dummy soother is specially designed to respect the natural development of your baby's palate. They are made from silicone and are taste and od free. The bottle brush with a curved brush head helps you clean baby bottles quickly and easily. The AirFree vent is designed to help your baby swallow less air. The teat stays full of milk, even when horizontal, for upright feeding. Reducing the air a baby ingests can help ease common feeding issues like colic, gas and reflux. 80 Percent of moms agreed that "my baby experienced fewer feeding issues" in a home placement test with 144 mothers in the US in 2017 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. What is colic, and how does it affect babiesColic is caused in part by swallowing air while feeding, which creates discomfort in a baby's digestive system. Symptoms include crying and fussing. See moreThe AirFreeTM vent can be easily assembled with any Philips Avent Anti-colic and Classic bottle. Also cleaning is a breeze, thanks to the bottle's wide-neck, and there only being a few parts to clean. Easy to clean and assemble. Reduces colic and fussing : A valve in the teat prevents vacuum build-up as your baby drinks, allowing uninterrupted feeding. Designed for less air intake: unique AirFree vent draws air away from the teat, so your baby swallows less air as they drink. Locks milk in, keeps air out: The teat stays full of milk, even when the bottle is horizontal, so your baby can drink in a more natural, upright position.