The special NUK Shape is modelled on a mother’s nipple as she breastfeeds. It leaves your baby’s tongue and jaw enough room for natural sucking movements. With its new soft zone, the silicone baglet is a better fit against the roof of your baby’s mouth – giving a natural feeling while drinking. The improved Anti-Colic Air System creates a natural flow so that your baby can drink in a relaxed way without swallowing air.