The next four hilarious adventures in one deluxe, glow-in-the-dark collection! Includes an inflatable Captain Underpants figure! With more than 38 million copies in print, Dav Pilkey's Captain Underpants books are among the bestselling children's series of all time! Now readers of all ages can enjoy a deluxe boxed collection of Books 5-8, featuring the tighty-whitey-wearing superhero who fights for Truth, Justice, and all that is Pre-Shrunk and Cottony! This set is encased in a book-shaped box with a groovy glow-in-the-dark cover and a super-cool, exclusive inflatable Captain Underpants figure!