Quick and easy shark fin dog costume is held on by two elastic bands. Rubies’ costume company has been bringing costumes and accessories to the world since 1950. As the world’s costume leader, we take seriously the mission to make dressing up fun! mascots, rental quality costumes, masks, wigs, accessories, shoes, and every significant licensed costume you would ever want to wear can be found under the rubies’ brand. Rubies’ brings you fun for every season: Halloween, Christmas, Mardi Gras, Easter, and all in-between.