Sports Pacifiers Get in the game with our new sports inspired pacifiers. They incorporate the superior NUK functionality with fun new designs that match our sports themed Ultimate Cup line. Features and Benefits ?NUK pacifiers are based on the shape of a mother's nipple while breastfeeding and are therefore optimally adapted to the baby's oral cavity. ?The NUK Air System releases air and allows the nipple to remain soft and keep its shape ?The orthodontic design