2 years & up. Engage your children in reading with this classic Caterpillar Interactive Reading Time Story Props and Book. Children will enjoy playing with the props as the very familiar caterpillar eats its way through the timeless story The Very Hungry Caterpillar. Much like the caterpillar in the story, the prop turns into a beautiful butterfly. This storytelling set contains 16 props and a hardback book. Surface wash. Butterfly measures 15"H.