The next generation of teat - the result of extensive research into latching, peristaltic movement and swallowing. The SofTouch™ 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 babies that drink 50ml in approximately 10 minutes. The SS teat tip is a round hole, meaning the milk will drip out without too much effort from your baby, great for when they are very young and their jaw muscles are less developed.