AT A GLANCE The Philips Avent natural response bottles are specially designed for moms who want to combine breast and bottle feeding for their newborns. The ultra soft, breast shaped nipple encourages a natural latch and mimics the feel of a mother's breast, making the switch between breast & bottle as smooth as possible for you and your baby. The bottles allow the babies to drink, swallow and breathe using the natural rhythm. The bottles come with a unique opening that only releases milk when the baby actively drinks. FEATURES & BENEFITS The nipple opening prevents milk loss, spills and messes by releasing milk only when the baby feeds The wide, soft and flexible nipple mimics the shape and feel of a breast and encourages a comfortable feed The nipples are made of soft silicone and come in various flow rates to accomodate babies' feeding changes The anti-colic valve keeps air away from the baby's tummy to prevent discomfort and symptoms of colic The BPA-free bottles and nipples provide a secure feeding experience Twin Bottle Pack Capacity: 125ml/4oz Suitable from 0 months+