Birth & up. Read along to classic nursery rhymes with your little one or talk with your baby about the exciting world around them with this set of Indestructibles Community & Nursery Rhyme Picture Book Set. Each book features a different theme containing simple words and phrases to accompany the illustrations. These soft and paper-like books are designed to be chew proof, rip proof, and drool proof for babies who "read" with their hands and mouths. Made of waterproof, tear-resistant, baby-durable, and non-toxic material. Books can be cleaned in the dishwasher or washing machine.