9/10 mums agree**Helps maintain established breast-feeding patterns***Voted in a survey of 109 mums who have used the Lansinoh mOmma Feeding bottle, of which **79 have breastfedDeveloped over 50 years of extensive research, the NaturalWavePeristaltic Teat encourages the natural sucking style of babies. This involves 3 steps: latch-on peristaltic movement and swallowing.Peristaltic tongue movementBaby's tongue moves in a smooth ''wave-like'' motion to compress nipple and extract milk. This encourages correct oral, jaw and facial development.Available in slow, medium and fast flow rates. For use with Lansinoh® mOmma® Feeding Bottles.The NaturalWave Teat has been clinically proven to encourage baby's 'wave-like' tongue movement, helping maintain established breastfeeding patterns, Super soft and flexible 100% silicone teat, Air Ventilation System reduces intake of air, a potential cause of colic, Designed for feeding expressed breastmilk when mum and baby are apart