Pigeon Mag Mag All In One Set is designed to facilitate and enhance the development of baby's drinking skills by allowing a smooth transition from nipple to straw with its interchangeable drinking tops. MagMag All-in-One Set is a training cup that comes complete with all the 3 interchangeable tops for ease of training- nipple top, spout top and straw top. Starts with a nipple top in which the nipple designed to fit your baby's mouth as the baby transits from breastfeeding to bottle-feeding by using his first training cup with handles. Move on to spout top as your baby accustoms himself to drink from different shape other than nipple. Once your baby's sucking power gets stronger, train him to drink using straw, just like an adult.