The mother's nipple changes shape during breastfeeding . Adapts to baby's mouth , enabling optimal food intake and providing the best possible training for the jaw , palate , tongue and lips. For this reason , the shape of the teat NUK shape is based on maternal nipple during breastfeeding .

The nipples of the NUK FIRST CHOICE combine the benefits of orthodontic NUK shape with a sensation that resembles that of breastfeeding . The following characteristics of the nipple bottle allows you to combine ease of breastfeeding and bottle feeding .