The Philips Avent 4 Ounce Glass Baby Bottle Pack of 4 with Natural Response Nipple is a set of durable and dishwasher-safe glass bottles designed for babies from 0 months old. The bottles feature a breast-like nipple made of silicone, with a slow flow rate suitable for newborns. This pack includes 4 bottles with a capacity of 120 ml / 4 oz each, making it convenient for parents to feed and nourish their little ones. The Avent brand is known for its quality baby products, making this bottle set a reliable choice for bottle feeding.