2-in-1 Natural Feeding Set : Avent

2-in-1 Natural Feeding Set : Avent. Avent The Avent 2-in-1 Natural Feeding Set allows you to switch between reusable and disposable bottles with ease since the Natural Feeding Bottle and VIA Disposable Nurser use the same natural shape nipple. Avent's soft natural shape nipple makes it easier for your baby to breastfeed and bottle feed with less confusion. The nipple features a one-way air valve that... permits more air to flow into the bottle and allows baby to control milk flow and intake, which promotes healthier feeding. Contents: 1 x 4oz Bottle with NB nipple, 1 x 9oz Bottle with NB nipple, 5 x 8oz VIA Disposable bases, 5 x VIA lids, 2 x VIA adaptors, 1 x NB nipple and 1 screw ring.