Philips avent scf403/17 anti-colic baby bottle 9oz with anti-colic baby bottle slow flow nipple promotes the healthfort 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 preventing air into your babys tummy. The valve on the anti-colic baby bottle nipples also flexes to your babys feeding rhythm so milk only flows at your babys 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 thoroughly. Ease of cleaning helps to ensure more hygienic, healthier feeding. The anti-colic baby bottle feeding bottle works interchangeably with most of the philips avent range making it easier to meet your growing babys changing needs. Wemend to use the anti-colic baby bottle bottles only with the anti-colic baby bottle nipples.