Marvel Avengers Backpack for Boys Kids, Black/Blue, 16x12x5 (School Supplies) Marvel Avengers Backpack for Boys Kids, Large 16 Inch (Avengers School Supplies). Deluxe 16 inch large Marvel Avengers backpack with padded shoulder straps, zip compartments and top loop for hanging. Deluxe 16 inch large Marvel Avengers backpack with padded shoulder straps, zip compartments and top loop for hanging. Officially licensed Marvel Avengers school supplies product. The perfect back to school Marvel Avengers backpack for kids -- boys and girls alike.