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.
Natural latch on with breast-shaped nipple.
No-drip nipple design prevents spills and lost milk.
Compatible across the Philips Avent range.
Easy to hold even for little hands.
Simple to use, easy to clean and quick to assemble.
Natural Response bottles and teats are BPA free*
Vents air away from your baby's tummy.
Designed to reduce colic and discomfort.

Directions:
Clean all parts before each use to ensure hygiene.
After each use, disassemble all parts, wash in warm, soapy water, remove any food residues and rinse thoroughly. 
Sterilise before each use. 
Refer to user manual for full instructions.