Pigeon Peristaltic Plus Bottle set is a set that features wide neck bottle and perstaltic plus teat. The teat is the result of extensive research in latching, peristaltic movement and swallowing. The Peristaltic Plus teat aims to be the closest teat to a mother's nipple to reduce nipple confusion and promote easy bottle feeding. Made from BPA-free, medical grade PPSU plastic in an ergonomic design.