Natural Feeding Rhythm: Baby controls the pace of milk flow just like breastfeeding, supporting a familiar rhythm; #1 Pediatrician recommended natural baby bottle¹ Active Drinking Flow: Unique opening and tip release milk only when baby actively drinks; when baby pauses to swallow and breathe, no milk flows Breast-Shaped Nipple: Soft, wide nipple mimics the shape and feel of a breast for easier breast and bottle feeding; #1 brand recommended by moms worldwide² No-Drip Flow 4: No-drip nipple helps prevent spills and lost milk at home or on the go; each bottle includes a fast flow nipple (Flow 4) Anti-Colic Valve: Integrated valve keeps air away from baby’s tummy during feeding to reduce colic and discomfort for a more reassuring feed The set includes: 4x 11oz Natural bottles with fast flow nipples (Flow 4)