The MAM Grow with Baby Gift Set includes everything you need to create the ideal baby bottle for your developing baby. The bottle accessories included are all interchangeable so you can mix and match the bottle parts to adapt the baby bottle to fit baby's individual feeding needs. The bottle nipples and extra soft spout can be used on any of the 5 oz or 9 oz bottles, and the handles can be added to the bottle when baby is ready to hold the bottle on their own.