The Philips Avent Natural starter set is ideal to help you combine breast and bottle feeding, with everything you need to get started. It includes 2 Natural 4 oz bottles for the early days, and 2 Natural 9 oz bottles for your babys growing appetite, a curved cleaning brush and a soother. Includes: Two 125ml natural bottles. Two 260ml natural bottles. A bottle and teat brush. A translucent soother. Features: The wide breast shaped teat promotes natural latch on similar to the breast, making it easy for your baby to combine breast and bottle feeding. The twin valve design reduces colic and discomfort by venting air into the bottle and not babys tummy. The petals inside the teat increase softness and flexibility without teat collapse. Your baby will enjoy a more comfortable and contented feed. The natural feeding bottle has also been designed to be fully compatible and easily interchangeable with other products in the avent range including breast milk storage containers, easy sip cups and breast pumps. This means bottles can be used from the transition from baby to toddler. All natural bottles can be used in any of the avent sterilisers and bottle warmers. Made from bpa-free materials. General information: Suitable from birthmonths and over. Manufacturers 2 year guarantee.