Philips Avent Natural Response Bottle Set Basic (4 pieces). The three baby bottles in the set have the same design but different filling quantities. With different teat levels, the teats are also optimised for varying baby needs. The natural response teats are inspired by the mother's breast. They only release milk when the baby is actively feeding. If it stops to swallow or take a breath, the flow also pauses. This allows the child to drink at its own natural rhythm. Age: from 0 months. For a problem-free combination of breastfeeding and bottle feeding. The teat only releases milk when your baby is actively drinking. Bottle brush with curved head for easy cleaning. Natural drinking with a breast-like teat. Designed to reduce colic and discomfort. Compatible with the Philips Avent range.