Pigeon SofTouch Peristaltic PLUS teat is highly acclaimed - the result of extensive research into latching, peristaltic movement and swallowing. It has a wide neck design similar to breast shape to avoid nipple confusion and features a textured surface for perfect latch on and good tongue position. Firm, but soft, the teat allows babies to use their natural feeding motion and each has an Air Ventilation System (AVS) to support constant milk flow and help reduce colic. BPA and BPS free. Teat size LL - Y cut hole As a guide use this teat for babies 9-15 months old. As each child is unique, the ultimate indicator of which teat to use is your baby.