Orthodontic shaped teat with a special, super soft zone adapts ideally to baby's palate Orthodontic shape which mimics a mother's nipple during breastfeeding for a more natural soothing experience Flat shape helps prevent pressure marks and stops the soother from falling out of baby's mouth The nuk air system helps ensure the mouthpiece remains soft and flexible Including a reusable case to keep soother clean and safe which can be used to hygienically treat soothers with steam in a microwave