Our trusted classic range has been improved to provide an even more enjoyable feeding experience the clinically proven anti colic system is now integrated into the teat making the bottle extra easy to clean and assembleclinically proven to reduce colic and discomforteasy to clean for perfect hygiene anti colic system proven to reduce colic fussing is reduced especially at night baby controls milk flow for less spit up burping and windeasy to use clean and assemble leak free for enjoyable