NUK Hello Kitty Silicone SootherNUK Orthodontic shape nipple soothes and calms baby better than our original nipple and its asymmetrical shape helps promote healthy oral development by naturally fitting into your baby's palate. Scoop nipple cavity allows maximum tongue movement, which gently exercises your baby's tongue, palate and jaw and promotes proper teeth alignment by helping your baby avoid thumb sucking. Heart shaped shield fits perfectly under baby's nose for easy breathing