Made from organic natural rubber, this little Dolphin from our Ocean Buddies Collection is easy for tiny hands to grip. And when shaken, it responds with a gentle sound that is sure to comfort your little ones. Each marine animal character has an enclosed rattle that creates a soft sound when shaken. Sound Toys, like rattles, provide stimulation to babies as they discover their senses. By creating sound, your child starts to learn fundamental lessons in cause and effect relationships. These ocean buddies make a fantastic addition to bath time or water play, fully sealed for hygiene.