The new Philips Avent Natural bottle is compatible with the Philips Avent range, with the exception of classic bottles and cup handles. We recommend that breastfeeding bottles be used only with the nipples. The wide breast shaped nipple promotes natural attachment similarly to the breast, making it easier for your baby to combine breast and formula feeding. The petals inside the nipple increase softness and elasticity without nipple collapse. Your baby will enjoy a more comfortable and satisfying feeding. An innovative double valve is designed to reduce colic and discomfort by venting air into the bottle, not baby's tummy. Due to the unique shape, the bottle is easy to hold and hold in any direction for maximum comfort, even for baby's tiny hands.