Designed for uninterrupted feeding 2 Bottles 4oz/125ml Newborn flow teat 0m+ Anti-colic valve proven to reduce colic* Our anti-colic valve is designed to keep air away from your baby's tummy to reduce colic and discomfort. As your baby feeds, the valve integrated into the teat flexes to allow air into the bottle to prevent vacuum build up and vents it towards the back of the bottle. It keeps air in the bottle and away from babys tummy to help reduce colic and discomfort. 60% less fussing at night* Philips Avent Anti-colic bottle reduces fussing. Babies fed with Philips Avent Anti-colic bottles experienced 60% less fussing at night, than babies fed with a competitors anti-colic bottle.* Ribbed texture prevents collapse for uninterrupted feeding The teat shape allows secure latch and the ribbed texture helps prevents teat collapse for uninterrupted, comfortable feeding. Technical Specifications Material Bottle BPA free Polypropylene Teat BPA free Silicone What is included Baby bottle 2 pcs Bottle Capacity 4oz/125ml Design Bottle design Ergonomic shape Wide neck Ease of use Bottle use Dishwasher & microwave safe Easy to assemble Easy to clean Easy to hold Development stages Stages: 0-12 months Functions Anti-colic valve: designed to reduce air ingestion Teat: Easy latch on, Ribbed texture prevents teat collapse, Proven anti-colic system Ease of use easy to clean and assemble leak-free design 4 pieces for easy assembly