A collection of interactive soft books which make story time fun. An interactive soft book. Touch the activator to the silver buttons throughout the book to hear different sounds. Features sounds of various vehicles on the go such as a fire engine and police car. Mainly designed for kids. DEMDACO Friends on the Go Book with Sound By Love To Play Collection. Made of polyester and Velcro. Measures 8" x 8". Uses (3) 1.5 v button cell batteries, included. Batteries replaceable via the opening on the last page.