Having a difficult time finding the right pacifier for your baby? The new NUK Airflow pacifiers are accepted by 95% of babies* and feature the improved orthodontic nipple shape. NUK's asymmetrical nipple naturally fits baby's palate and is now improved to allow for more room for a natural sucking motion, reduce pressure on teeth and jaw, and helps prevent teeth misalignment. Invented over 60 years ago by pediatric dentists and doctors, the NUK pacifier is modeled after the natural shape of mom's nipple while breastfeeding. This makes for an easy transition from breast to pacifier and back. NUK Airflow pacifiers allow 3 times more airflow to prevent irritation on baby's skin. The NUK heart-shaped shield fits perfectly under baby's nose for easier breathing and prevents irritation. Now all NUK pacifiers are available in a reusable storage case that allows for easy cleaning in the microwave. (*Based on Market Research, 2017, tested with 307 pacifier users)