Philips Avent Infant Starter Set is the most natural way to start bottle feeding. The wide breast-shaped nipple on the Natural bottle promotes natural latch-on so you can easily combine breastfeeding and bottle feeding. The ultra soft nipple mimics the feel of the breast. Our flexible spiral design combined with the comfort petals allow for a natural movement while baby feeds. The bottles have unique Airflex vent technology integrated into the nipple and are designed to reduce colic and discomfort by venting 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 and the wide bottle neck makes filling and cleaning easy. The set includes 2 Natural 9 ounce/260ml bottles with 2 Natural slow flow nipples, 3 Natural 4 ounce/125ml bottles with 3 Natural newborn nipples, 2 additional nipples (1slow flow, 1 newborn), a Bottle Brush, 7 sealing disks, and 2 Soothie Pacifiers (0-3m). The Baby Bottle Brush’s curved brush head and molded tip cleans hard to reach areas. Soothie Pacifiers are used by medical professionals to calm newborns, the highly durable pacifiers features hospital grade silicone and one piece construction.