Tommee Tippee Closer to Nature Slow Flow Feeding Nipple 0 Months+ 2 Pack 423961 is Perfectly Designed for Newborns, Providing a Gentle and Controlled Flow. Its Soft, Breast-like Shape Encourages a Natural Latch, Making It Easy for Babies to Switch Between Breast and Bottle. The Anti-colic Valve Helps Prevent Air Ingestion, Reducing Discomfort and Fussiness. Made From Safe Silicone, These Nipples Are Easy to Clean and Replace, Ensuring Hygienic and Comfortable Feeds for Your Little One.