Hegen’S Medium Flow Teat Is Suitable From The Third Month As It Gradually Increases The Milk Flow Rate As Babies Develop Their Ability To Coordinate Both The Suckling And Swallowing Reflex.Hegen'S Teats Are Designed To Encourage Seamless Transition From Breast To Bottle Feeding, Minimising Nipple Confusion For Your Baby.Our Velvety Soft, Elliptical Shaped Teat Closely Mimics A Mother'S Lactating Breast While The Offcentre Teat Design Promotes Upright Feeding Similar To A Position In Which Babies Are Nursed To Reduce The Risk Of Milk Backflow And Resulting Midear Complications And Colic.The Builtin Anticolic Air Vent Reduces Unwanted Air Intake And Prevents Bubbling Of Milk, Saving Precious Nutrients From Oxidation.Additional Teats Of Various Sizes (All Sold Separately) Allow Mothers To Simply Swap To Their Choice Of Teats For Baby’S Perfect Feed As Time Goes By. Simply Assemble The Teat Into The Collar And Your Hegen Bottle Instantly Becomes A Feeding Lid For Baby. •Mimics The Mother’S Breast Velvety Soft, Elliptical Shaped Teat Closely Mimics The Natural Breast Of Mothers To Promote Natural Latchon For Babies. This Minimises Nipple Confusion, Making It Easier To Combine Breast And Bottle Feeding. •Prevents Colic Air Venting Bypasses The Milk To Prevent Aeration, Minimising The Oxidation Of Precious Nutrients. This Reduces Excessive Air Intake, Safeguarding Your Baby From Tummy Upsets. •Asymmetrical Teat For Upright Feeding Hegen’S Super Soft Teats Are Asymmetrical And Offcentre To Allow For A Natural Upright Feeding Position At A 20 Degrees Tilt, Similar To Nursing From The Breast. This Minimises The Tilt That Conventional Baby Bottles Require, Reducing The Risk Of Milk Backflow Which May Cause Midear Complications.