Philips Avent Anti-colic bottles with AirFree vent reduce feeding issues like colic and gas. The unique design draws air away from the nipple, promoting upright feeding for easier digestion. With a secure latch and easy cleaning, this bottle is perfect for your baby's needs. Use with or without the AirFree vent, and choose from a variety of flow rates. Recommended for use with Philips Avent Anti-colic bottle nipples. Includes 1 4oz bottle with AirFree vent and Flow 1 nipple.