Marvel Universe Captain America Shield T-Shirt Royal Blue is 100% Cotton. Navy Burnout Heather is a Soft, smooth, lightweight Cotton/Polyester blend. To best care for printed apparel: Wash in cold water, AIR DRY, Do not feed after midnight. Adult Men's fitted sizes, has been reported to run small, please order a size up for a relaxed fit Officially Licensed Marvel Comics Features the classic logos for your favorite Marvel superheroes! Pick your favorite or get them all Perfect for fans of the Avengers and all the Marvel Comics heroes