Nuk happy days silicone soother for girls size 1 are perfectly designed to keep your little one comforted and calm while at home or out and about these soothers are 100 bpa free promotes healthy jaw and tooth development these are specifically designed with an orthodontic profile that allows it to adapt to the individual shape of your babys mouth helps to exercise the lips tongue and facial muscles which promotes the healthy development of teeth and jaw no more red marks the flat shape of