What are picture books? What ages are they for? Kate May 26, 2017 23:41 Updated Follow We send hardcover picture books (hard outer cover, normal paper pages). Feel free to check out our Instagram account for examples of picture books we’ve sent recently! Our picture book box is best for children ages ~2.5 to 6. Related articles What are board books? What ages are they for? What age range is Bookroo appropriate for? What if I have children in both the board book and picture book age groups? What is your return policy? How do you decide which books to send? Comments 0 comments Article is closed for comments.