Interactive Bath Books are a subset of children's books that require participation and interaction by the reader. Participation can range from Bath Books with texture to those with special devices used to help teach children certain tools. Interactive Bath Books may also incorporate modern technology or be computerized books. Movable books, a subsection of interactive books, are defined as "Bath Book, transformations, tunnel books, volvelles, flaps, pull-tabs, pop-outs, pull-downs, and more, each of Bath Book performs in a different manner. Also included, because they employ the same techniques, are good dimensional greeting cards."

Following is the bath books specification,