General Information The Natural Response Nipple releases milk only when baby actively drinks. Babies can drink, swallow and breathe using their natural rhythm, like on the breast. Making it easy to combine breast and bottle feeding, Includes Anti-colic valve designed to keep air away from baby’s tummy during feeding, to help reduce colic and discomfort Recommended for babies 6 months Warnings Please read the enclosed manual before use for instructions. Ingredients BPA free*; Silicone Directions Always refer to the enclosed manual for instructions.