The new mouth shield is easily distinguished by its large ventilation holes. These openings reduce skin contact, because they have a smaller contact area and allow the baby's skin to breathe enough. This protects it from scars, irritation and redness that can be caused by the moisture that accumulates under the contact surface of the mouth shield when the baby uses a regular pacifier for a long time. The curved anatomically shaped shield of the NUK Freestyle pacifier touches perfectly and naturally on your baby's face.