Crenstone Exclusive Teenage Mutant Ninja Turtles Backpack Set - Bundle with 16” TMNT Backpack for Boys, Water Pouch, Stickers, More | TMNT Backpack for School. This Teenage Mutant Ninja Turtles backpack set includes a 16” backpack with adjustable shoulder straps, zip closure compartment, and top loop for hanging featuring colorful artwork of favorite TMNT characters. This Teenage Mutant Ninja Turtles backpack for kids has the perfect amount of room to carry binders, notebooks, pens, pencils, and any other TMNT school supplies. Show off your love of Teenage Mutant Ninja Turtles in style. This TMNT backpack bundle also includes TMNT stickers and a green water pouch, making the perfect gift set for any TMNT fan. Officially licensed Teenage Mutant Ninja Turtles backpack and lunch box set is perfect for kids of all ages, boys and girls alike. Set also includes a Beach Kids superhero door hanger.