Philips Avent Natural Response Bottle Teat - 2 x Baby Bottle Flow 4 Teats for Babies Aged 3+ Months, BPA Free (Model SCY964/02) Philips Avent Natural Response Bottle Teat - 2 x Baby Bottle Flow 4 Teats for Babies Aged 3+ Months, BPA Free (Model SCY964/02

- Anti-colic valve: The baby bottle is designed to keep air away from the baby's tummy during feeding - Works like the breast: The teat releases milk when baby actively drinks, this is different from the traditional free-flow teats. As with breastfeeding, it can take time for a baby to get used to this. - Natural Response nipple: The unique Philips Avent bottle nipple opening only releases milk when the baby actively drinks. - Right nipple flow: Find your baby's perfect flow rate and personalise your Avent bottle - No-drip nipple: The bottle-feeding nipple only opens to release milk when the baby is feeding.