Now your baby can transition from breast to bottle in a natural way with the NUK® Simply Natural™ Bottles. Designed to mimic the fit, flow and movement of mom as closely as possible, this is the only bottle with up to nine nipple holes, just like mom. This provides a natural feeding experience to ensure the mom-baby bond remains strong. NUK® Simply Natural™ bottles feature a super soft nipple that mimics the shape mom's breast takes while breastfeeding. The scoop nipple cavity allows space for baby's tongue and jaw to move naturally, just like they do when breastfeeding. Now NUK® Simply Natural™ bottles feature NUK's SafeTemp technology, which changes colors when the milk is too hot to feed baby.