The IcyBite teether/soother by Nuby provides a cool textured surface for baby to bite and teethe on during teething periods. The cool resilient surface soothes and stimulates sore gums safely. Engineered with raised offset surfaces that assist in the eruption of teeth by gently massaging infant's gums. Colorful shapes are easy for baby to hold and sized for maximum effectiveness as a teether and soother. All Nuby products are made of safe, durable materials and exceed all government safety regulations and standards. Purice stays colder longer than water filled teethers. Cool only in a domestic refrigerator. Care instructions: wash before initial use and after each subsequent use. Wash with warm, soapy water. Rinse thoroughly. Refrigerator safe.