Thanks to an amazing friend, this Six Flags Justice League Sticker Book is now part of my collection. With the book is a Superman: The Escape ride pressed penny. The book measures approximately 5.75 inches tall by 4.25 inches wide. Superman is front-and-center on the cover accompanied by Batman, Green Lantern and The Flash. These are the characters used within the book but I’m quite curious why Wonder Woman is missing from this ensemble.