Product description AVENT Natural Response Slow Flow Baby Bottle Teat 0m+ A silicone bottle nipple that mimics the breast and supports a babys natural sucking rhythm. Suitable for babies from day one. Slow-flow nipple. Milk is only released when the baby actively sucks. The J-slit allows your baby to control their own sucking pace and rhythm. Milk is released only when your baby is actively sucking. When your baby stops sucking to swallow or breathe, the milk also stops flowing. Natural latch on thanks to the breast-shaped nipple The wide, soft and flexible teat mimics the shape and texture of a womans breast, helping your baby latch on and drink calmly. Reduces the occurrence of colic and discomfort The anti-colic valve keeps air away from your babys tummy while feeding, reducing colic and discomfort. The special anti-drip design of the teat prevents milk from spilling The nipple opening is designed so that milk only flows when the baby sucks. This ensures no milk spills. Appropriate speed of food flow Every baby feeds differently and at their own pace. Philips Avent Natural nipples allow for different flow rates, allowing you to tailor the bottle to your babys needs. All Natural Response nipples are made of soft silicone. Responsive Natural teats and bottles are BPA-free Philips Avent Natural bottles and teats are made of BPA-free material. The package contains 2 pcs.