Philips Avent Anti-Colic Bottle with AirFree Vent, 4oz, with Flow 1 Nipples, 0m+, 4pk, Clear, SCY701/04

Designed to reduce feeding issues: colic, gas, and reflux
AirFree vent keeps nipple full of milk, not air
AirFree vent makes it easy to feed in an upright position by keeping the nipple full of milk. Bottle can be used with or without the AirFree vent
BPA Free bottle can be used with or without the AirFree vent.
Easy to clean and assemble wide neck bottle with only a few parts