Super Mario Backpack for Boys 4-6 - 16" Mario School Bag for Elementary Students with Adjustable Straps, Mesh Side Pocket | Mario Backpack for Kids. This Mario backpack set includes a 16” backpack with adjustable shoulder straps, zip closure compartment, and top loop for hanging featuring colorful artwork of Mario. This Mario backpack for kids contains plenty of room to carry school supplies, your water bottle, and any other small items you need to take to school or on the go. Show off your love of Mario in style. This Mario backpack makes the perfect back to school gift for any Mario or videogame fan. Officially licensed Super Mario backpack set is perfect for fans, boys and girls, alike.