The Playtex Baby Hey Diddle Diddle Crinkle Book is a teething toddler toy designed to engage infants and toddlers in an educational and interactive way. The crinkle book features the popular nursery rhyme "Hey Diddle Diddle" to help promote early reading and language skills. The soft, textured material is perfect for teething babies to chew on, providing comfort and relief during the teething process. This toy is not only entertaining but also serves as a practical and developmentally beneficial addition to a child's playtime.