The new teat helps to make bottle feeding more natural for your baby and you. The teat features an innovative petal design for natural latch on similar to the breast, making it easy for your baby to combine breast and bottle feeding. The teat features a petal design for natural latch-on similar to the breast. This breast-shaped teat allows for a more comfortable and contented feed for baby. There are also unique comfort petals for an extra soft and flexible teat without teat collapse. The different flow rates enable the most comfortable feed and the advanced anti-colic system uses an innovative twin valve design which reduces colic and discomfort by venting air into the bottle and not baby's tummy. All items included are BPA free. Compatible with the Philips Avent Natural bottle. Suitable from birth to 6 months. For hygiene reasons, we recommend changing teats after 3 months.