Philips Avent Natural Response Baby Bottles

Philips Avent Natural Release Baby Bottles Quant- 4 Color- clear Size- 4oz 0m+ Condition- only used one bottle one time. Has been sterilized. Do not have original box. The Natural Response Nipple works with your baby's natural feeding rhythm, making it easy to combine breast feeding and bottle feeding. The nipple has a unique opening which only releases milk when the baby actively drinks. So when they pause to swallow and breathe, the milk pauses too.