The Philips Avent Natural Response Baby Bottle, model SCY903/01, features a unique Natural Response Teat designed to work with your baby's natural feeding rhythm. This innovative teat supports baby's individual pace, allowing them to drink, swallow, and pause naturally, similar to breastfeeding. Its design facilitates a seamless transition between breast and bottle, making it an ideal choice for parents looking to combine both feeding methods. This 260ml (9 oz) bottle is suitable for babies 1 month and older.