Superhero Masks Craft Kits (Makes 12) Self-Adhesive Foam Each 8 1/2" Looking for the perfect addition to your superhero costume. These superhero masks will complete your outfit. Perfect for Halloween costumes or your birthday party photo booth, these super hero eye masks are sure to keep your secret identity safe. Includes self-adhesive foam pieces. 8 1/2" . Makes 12 Masks.