Philips AVENT SCF563/37 Anti-colic bottle promotes the health and comfort of your baby. This BPA free bottle is proven to reduce colic and fussiness, especially at night. The unique valve integrated into the nipple flexes to allow air into the bottle, preventing vacuum build up, and prevening air into your baby's tummy. The valve on the Classic+ nipples also flexes to your baby's feeding rythm so milk only flows at your baby's pace to minimize overeating and spit-up, burping and gas. The extra soft silicone nipple is available in different flow rates for babies of all ages. With few parts, rounded edges and wide neck, the bottle is easy to clean thouroughly. Ease of cleaning helps to ensure more hygienic, healthier feeding. The Classic+ feeding bottle works interchangeably with most of the Philips AVENT range making it easier to meet your growing baby's changing needs. We recommend to use the Classic+ bottles only with the Classic+ nipples. BPA free Clinically proven anti-colic system vents air into bottle instead of your baby's tummy Clinically proven to significantly reduce fussing Few parts for quick, simple assembly ; Easy to clean for healthier feeding Includes 3 Classic+ 9 Ounce Bottles, 3 Classic+ Newborn Nipples and 3 Classic+ bottle caps