Give your baby the natural feeling of breastfeeding in a bottle with the Philips Avent SCF651/27 BPA-Free Natural Newborn Nipple, 2-pk. Made of soft, durable silicone with a petal design that prevents it from collapsing, these newborn nipples are perfect for tiny mouths. Each nipple has twin anti-colic valves, which vent air into the bottle and not into your little ones tummy, helping your babe rest peacefully. Mix and match this set with any Avent Natural bottle. Dishwasher safe.