Philips Avent Natural bottle supporting your baby's natural drinking rhythm: baby controls the pace of the milk flow, just like breastfeeding Baby bottles designed with a unique opening and tip that only release milk when your baby actively drinks: when pausing to swallow and breathe, no milk flows Philips Avent baby bottles make it easy to combine breast and bottle feeding with a soft, wide breast-shaped nipple that mimics the shape and feel of a breast No-drip nipple design helps prevent lost milk from the tip, giving you peace of mind at home and on the go; the bottle comes with fast flow nipple (Flow 4) Anti-colic valve for your and your baby's well-being: it keeps air away from your baby's tummy during feeding to reduce colic and discomfort The pack includes: 4x 11oz Natural bottles with fast flow nipples (Flow 4) Best Bottle for Newborns winner - Best of The Bump Award 2024.