The Philips Avent Natural Response Baby Bottles are designed for newborns and babies from 0 months old. These individual bottles feature an anti-colic teat made from silicone, and are constructed from BPA-free plastic. The breast-like bottle features a 125ml (4oz) capacity, making it suitable for feeding small amounts of milk or formula. The clear colour and sleek design make these bottles a convenient and healthy choice for parents looking to feed their little ones.