Pigeon SofTouch Peristaltic PLUS Wide Neck Nipple Size LL stretchable nipple that designed to simulate the normal breast sucking pattern. The textured surface of the breast feeding nipples make it simpler and secure for the baby to latch. With Super soft and flexible silicone nipple allowing normal and smooth movement of the tongue. Lower intake of gas is the air ventilation system (AVSTM), a probable source of colic.