A 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 with a wide breast-shaped nipple with a soft feel that mimics the shape and feel of a breast; plus baby controlling the flow of milk. A bottle brush with a curved brush head for easy cleaning of rounded bottle edges and a molded tip to clean the nipple. Sealing discs to covert any Philips Avent bottle into a storage container.