Ideal for carrying all sorts of book-related things, the 17'' by 13'' TMNT Collage Nylon Backpack is a great backpack for die-hard fans of Teenage Mutant Ninja Turtles! I say 'die-hard' because Donatello, Leonardo, Raphael, and Michelangelo are represented in their early 90s versions and we all love some good ol' fashioned Ninja Rap! That's some pretty strong motivation and the TMNT Collage Nylon Backpack with its standard sized main compartment and pocket should be enough to seal the deal. Right? Right?!?!?