Fifty years of comprehensive research have shown that a baby's sucking style consists of three essential steps: latching on, peristaltic tongue movement (wave-like movement of the tongue), and swallowing. It has also become clear that a baby must be able to perform the peristaltic tongue movement to promote natural oral and jaw development. The NaturalWave nipple was specifically designed with this goal in mind, allowing the baby to mimic the same tongue movement and easily switch between breast and bottle and back again. In the Lansinoh range, the NaturalWave nipple was created to enable mothers to breastfeed for longer and give them the freedom to pump and feed breast milk while reducing the risk of nipple confusion. The Lansinoh NaturalWave nipple is clinically proven to promote this natural feeding pattern.