Holy costume, Batman! Dress up as Gotham's favorite superhero with the Batman Arkham Adult Batman Costume. Jumpsuit with muscle chest makes you look super strong. Mask gives you a batty look. Cape, belt and boot covers give you the completed head to toe outfit. Product Detail. Includes: jumpsuit with muscle chest, cape, 1/2 mask, molded belt and attached boot covers. This is an officially licensed Batman costume.