Allows baby to use natural feeding motion learned at the breastSofTouch™ Peristaltic PLUS Nipple is 100% silicone, super soft and flexible to allow for natural and smooth tongue movementAir Ventilation System (AVS™) reduces intake of gas, a potential cause of colicBottle shape is easy to holdSpecially designed roll-free bottle hoodsBottle is made from Polypropylene (PP) material which is durable and lightweightBPA Fre