An ultra-soft nipple for Philips Avent Natural baby bottles that mimics the feel of the breast; it's ideal for gentle drinkers who may not have strong sucking power Wide breast-shaped silicone nipple for baby bottle promotes natural latch-on; natural nipple shape and feel make it easy for baby to combine with breastfeeding The First Flow nipple for newborn bottles is designed to reduce baby feeding issues by venting air away from your baby's tummy Philips recommends continuing with the Natural Response baby bottle and nipple flow number 3 (SCY963/04) as your baby grows; however, parents should make decisions based on the observations of their baby The set includes: 4x Philips Avent Natural First Flow nipple