The heroes in a half-shell wish you a happy birthday! Our full-color Add-an-Age Teenage Mutant Ninja Turtles Letter Banner features jumbo cardstock letters that spell out HAPPY BIRTHDAY in green and purple, with prints of Leonardo, Donatello, Michelangelo and Raphael. A circular sewer cover between the two words allows space for you to customize the birthday banner with the birthday ninja's age, using the included cardstock letters and numbers and double-sided tape. Add turtle power to a totally tubular birthday party with an awesome banner! Our Teenage Mutant Ninja Turtles Letter Banner measures over 10ft 9in long and 10in tall.