The Philips Avent Natural Response Teat is designed for babies to drink at their own rhythm, mimicking breastfeeding. The teat releases milk only when the baby actively drinks, helping to keep air away from the baby's tummy during feeding. This unique design allows for an easier transition between breast and bottle feeding. The pack contains two teats with a flow rate of 3, suitable for babies aged 1 month and above. These teats are BPA-free and feature a no-drip design, releasing milk only when the baby is feeding. Finding the right teat flow rate is important for your baby's feeding experience.