The Avent BPA Free 9oz Feeding Bottle (SCF683/17) BPA free 9 ounce feeding bottle is clinically proven to reduce colic. The bottle has a two piece anti-colic valve that not only reduces colic for less air in your baby's tummy, but also works with your baby's natural feeding action so your baby controls milk flow, which can help reduce overeating and spit up. The soft, naturally shaped nipple promotes proper latch-on and makes it easier to combine breast and bottle feeding. This bottle is made from Polypropylene (PP), a BPA free material. The Avent SCF683/17 comes in a single pack.