MAD Costumes is an online fancy-dress and party retailer offering costumes, accessories, toys, games, and collectibles for adults and children. Its extensive selection covers animals, characters, celebrities, comedy, historical themes, and decades from the 1920s through the 1990s. Customers can browse children’s costumes inspired by books, films, television, cartoons, gaming, and popular characters, alongside adult outfits for themed parties and seasonal celebrations.

The store’s occasion ranges include Halloween, Christmas, World Book Day, Easter, Oktoberfest, Pride, and hen and stag parties. Accessories include wigs, hats, masks, makeup, face and body paint, costume jewellery, party decorations, tableware, and novelty items. MAD Costumes also sells pop-culture clothing, pet costumes, board games, role-playing games, toys, puzzles, trading cards, and a broad range of themed collectables. The website lists shipping options including free shipping in the USA and serves customers in multiple country and currency regions, including the United States and Canada. Its varied catalogue is designed to help shoppers find outfits and add-ons for family celebrations, fancy-dress events, and seasonal parties.