NUK Fawn Happy Kids Latex Soother Size 1 Pink have been specially developed & designed in an orthodontic shape, which adapts to the shape of your baby's mouth & helps exercise the lips, tongue & facial muscles & overall promoting healthy development of both teeth & jaws. The flat shape soothers help prevent pressure marks & avoids being displaced from your baby's mouth. The NUK air system helps to ensure the mouthpiece remains soft & flexible & the integrated grooves enable saliva to flow away from your baby's mouth, preventing skin irritation to the area.