The Philips Avent Natural Bottle features a wide breast-shaped nipple with a soft feel that mimics the shape and feel of a breast. Its Natural Response nipple lets your baby control the pace of the milk flow.  Give your child a natural way to bottle feed with the Philips Avent Natural Bottle Wide breast-shaped nipple with a soft feel that mimics the shape and feel of a breast; plus baby controlling the flow of milk like they do when breastfeeding