Nuby BPA free Soother Ring provides a cool textured surface for baby to bite and teethe on safely during their teething periods. They were engineered with raised offset surfaces that assist in the eruption of teeth by gently massaging infants gums. Colorful round shapes are easy for baby to hold and sized for maximum effectiveness as a teether and soother. pûrICE™ stays colder longer than water filled teethers!