The most natural way to bottle feed. Natural nipple shape and ultra soft feel makes it easy for baby to combine with breastfeeding Wide breast-shaped silicone nipple promotes natural latch on making it easy to combine with breastfeeding Made of premium quality borosilicate glass. Heat and thermal shock resistant Unique Airflex vent technology integrated into the nipple is designed to reduce feeding issues by venting air away from your baby's tummy. Compatible with all Philips Avent Natural nipples. These bottles include 0Month+ Newborn flow nipple Philips Avent Natural 4 Ounce Glass Bottle is the most natural way to bottle feed. 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. This Natural Philips Avent bottle is made of premium quality borosilicate glass, a BPA free material. It is heat and thermal shock resistant, so it can be safely stored in the fridge, warmed and is easy to wash and sterilize. Works with all nipples and caps from the Natural line. SCF701/17