With the Philips AVENT Natural variable flow nipple, you can adjust the flow rate by simply turning the bottle. The nipple features an innovative petal design for natural latch on similar to the breast, for easy combining breast and bottle. The wide breast shaped nipple promotes natural latch on similar to the breast, making it easy for your baby to combine breast and bottle feeding. Petals inside the nipple increase softness and flexibility without nipple collapse. Your baby will enjoy a more comfortable and contented feed. Innovative twin valve design reduces colic and discomfort by venting air into the bottle and not baby’s tummy.