Natural Response Design: The teats are designed to mimic the natural breastfeeding experience, allowing babies to drink, swallow, and breathe at their own pace, similar to breastfeeding. This design facilitates easier transition between breast and bottle feeding. Controlled Milk Release: The Natural Response Nipple releases milk only when the baby actively drinks, promoting a natural feeding rhythm and preventing spills. Anti-Colic Valve: These teats feature an anti-colic valve that helps prevent air ingestion during feeding, reducing the risk of colic and discomfort for the baby. Recommended Age: Suitable for babies aged 9 months and older, or for thicker feeds that may require a faster flow rate. Pack Size: Each pack contains 2 teats, providing a convenient option for parents to have spares or replacements on hand. Overall, the Avent Natural Response Teats 9 month+ Flow 6 2 Pack offers a solution for older babies who are transitioning to more advanced feeding needs. With its natural response design and anti-colic features, it provides a comfortable and convenient feeding experience for both babies and parents.