Philips Avent Natural baby bottles support the well-being of your baby so you can take the best care of yourself. The Natural Response nipple with the unique opening and tip lets your baby control the pace of the milk flow, releasing it only when actively drinking - just like babies do during breastfeeding. When pausing to swallow and breathe, no milk flows. Feeding feels as natural as from the breast! Easily combine breast and bottle feeding with a wide, soft and flexible nipple that mimics the shape and feel of a breast. It helps the baby to latch on and feed comfortably, using its natural rhythm. With the no-drip design, the nipple helps prevent spills and lost milk. An anti-colic valve integrated into the nipple is designed to reduce colic and discomfort by sending air away from your baby's tummy. The ergonomic shape makes it comfortable for parents to hold and easy for small fingers to grasp. Assembly is simple, with only a few parts, while the wide bottleneck makes filling and cleaning easy. Philips Avent Natural bottle is made from polypropylene, a BPA-free material. It works with all nipples and caps from the Natural Response range. The set includes 2 clear bottles and 2 bottles with seahorse and starfish design. It is totally natural for your baby to take 2-3 tries to get milk flowing from a new bottle. We have 5 different nipple flow rates for the Natural bottle - when looking for the right one, age is a guide, but your baby's approach to drinking and the feeding cues will help determine when to move to a higher or lower nipple flow rate. ¹ IQVIA Health ProVoice Survey 2025, USA