The Polar Pal™ teethers by Nûby™ provides a cool textured surface for baby to bite and teethe on safely during teething periods. They are engineered with raised surfaces that assist in the eruption of teeth by gently massaging your infant’s gums. Fun characters are easy for baby to hold and sized for maximum effectiveness as a teether and soother. This Nûby™ teether, filled with pûrICE™, can be placed in the refrigerator. pûrICE™ stays colder longer than water filled teethers!