Philips Avent Natural Baby Bottle Newborn Starter Gift SetA perfect starter set for new parents. Philips Avent Natural bottles with Natural Response nipple lets baby control the pace of the milk, like they do when breastfeeding. The nipples' unique opening and tip only releases milk when your baby actively drinks. When pausing to swallow and breathe no milk flows. Baby can drink, swallow, and breathe using their natural rhythm, just like they do when breastfeeding. Easily combine breast and bottle feeding