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. With the thick feed nipple, you can feed your baby with thicker feeds, following his developed feeding needs. We recommend to use this nipple for thicker feeds such as AR (thickened) milk, milk mixed with baby rice, milk mixed with baby food, puree, soup This nipple is made from silicone – a BPA-free material. We advise to use the Natural feeding nipples with Natural bottles only.