NUK Perfect Match Air Pacifiers are thoughtfully designed to allow baby’s delicate skin to breathe. The unique shield features extra-large openings that allow for maximum airflow to help prevent drool rashes. NUK Perfect Match Air Pacifiers are accepted by 96% of babies and feature an orthodontic nipple shape to help support baby's natural oral development. Invented over 60 years ago by pediatric dentists and doctors, NUK pacifiers are modeled after the natural shape of mom’s nipple. All pacifiers are BPA free and dishwasher safe (top rack only).