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. Soothie 0-3M pacifier, Soothie Pacifiers are used by medical professionals to calm newborns, the highly durable pacifiers features hospital grade silicone and one piece construction. The Natural bottle is made from polypropylene, a BPA free material, and works with all nipples and caps from the Natural line. The Natural response nipples come in flow rates 1-5, to keep up with your baby's growth. Includes: 3 4oz Natural bottles with Natural response nipples flow 2, 2 9oz Natural bottles with Natural response nipples flow 3, 1 Natural Response nipple, flow 1, 1 Natural Response nipple, flow 4, 7 sealing discs, 2 Soothie pacifiers 0-3 months+, 1 bottle brush. SCD838/31 What to expect when introducing the Philips Avent Natural Response Nipple. It is totally natural for your baby to take 2-3 tries to get milk flowing from a new bottle. Unlike traditional bottles the Natural bottle is designed to only release milk when your baby is actively drinking, like what happens when babies breastfeed. We have 5 different nipple flow rates for the Natural bottle. When looking for the right nipple flow rate, age is a guide, but your baby's approach to drinking and the feeding cues they will show will help determine when to move to a higher or lower nipple flow rate.