Four hilarious adventures in one glow-in-the-dark, tra-la-laaaaa-rific collection!

With more than 35 million copies in print, the Captain Underpants books are one of the bestselling series of the decade. Now readers of all ages can enjoy a deluxe boxed collection of the first four books about the underpanty-wearin' superhero who fights for Truth, Justice, and all that is Pre-Shrunk and Cottony! This set features a groovy glow-in-the-dark cover and a super-cool sound chip that says "Tra-La-Laaaaa!" every time you open the box-perfect for annoying boring grown-ups!