** Brand NEW 4oz 10 bottles ** Philips AVENT Anti-Colic Baby Bottles with AirFree Vent. ********************************** Philips Avent Anti-colic with AirFree vent bottles are designed to reduce feeding issues: such as colic, gas, and reflux. The unique AirFree vent is designed to draw air away from the nipple keeping it full of milk to avoid air ingestion. Feeding in an upright position can help to reduce reflux and aid in digestion. The nipple shape is designed for a secure latch for a comfortable feed. The Anti-colic bottle features a valve, integrated into the nipple, that reduces vacuum buildup and reducing air into your baby’s tummy. The Anti-colic bottle can be used with or without the AirFree vent.