The Flash Costume Adult The Flash costume adult size includes a jumpsuit with attached boot tops, belt, and mask headpiece. This The Flash costume adult size comes in adult sizes X-Large, Large, Medium. This The Flash costume adult size is an officially licensed The Flash costume. Please note: This item's color may vary due to inherent manufacturing variations or your computer monitor's color settings. The item you receive will be identical or substantially similar to the item pictured in this listing.