🖤Avengers Infinity War Backpack Featuring Spiderman 12"x16" The Avengers Infinity War Backpack featuring Spiderman is a stylish and durable backpack made of 100% polyester material. Measuring 12 inches by 16 inches, this medium-sized backpack is perfect for unisex kids who are fans of the Avengers franchise. The multicolor design, zip closure, and Spiderman character detail make it a fun and practical choice for everyday use.