Pigeon Peristaltic Plus Teat is a great solution to calm down your baby when they are upset. The new generation of teat - the result of extensive research in latching, peristaltic movement and swallowing. Our new Peristaltic Plus teat aims to be the closest teat to a mother's nipple to reduce nipple confusion and promote easy bottle feeding. SS size - for newborns that feed a little at a time.