Marvel Avengers Boys Backpack Marvel Avengers Backpack This cool Avengers bag comes with a bright design in a blue background and an eye-catching print on the front pocket of the Avengers face in 4 squares. A great option for days out, sleep overs and to take on his training as a SHIELD agent. With adjustable padded straps and zippered pockets, this Marvel rucksack will soon become his go-to for every day. Officially licensed Marvel Merchandise, exclusively designed for Character US.