Softouch Wide Neck Nipple 1 Pc SSSS size nipple (Round Cut) is ideal for newborns (0 M+) thanks to its smaller tip and soft, elastic silicone that closely mimics a mothers nipple. Because newborns have not yet developed jaw muscles, this nipple supports their natural sucking ability. Available Size Line Up From SS to LLL, each size provides a flow rate that matches your babys growth stageoffering peace of mind as you nurture their tomorrow. Key Features Natural switch between breast