Philips Aventclassic range has been better-quality to deliver an even more pleasant feeding experience. The clinically proven, anti-colic system is now combined into the nipple, making the bottle extra easy to clean and assemble. Philips has exposed that two-week-old infants with AVENT Bottles have fewer colic difficulties than conventional bottle-fed infants. They also work together with the baby's natural tempo to facilitate a healthy and efficient feeding.