This LED Costume Accessory is Made with High Quality Plastic and Cloth. Halloween LED Costume Set Comes with AA Batteries that Can be Used Immediately When You Open the Package. Perfect for Halloween Party, Disco, Clubs, Mardi Gras, Costume Parties, Carnival Events. They’re practically instant-costumes, vision costume and everyone will love your easygoing style. It Will Definitely be a Big Hit in Any of the Occasions. The Walt Disney World Dolphin also has Club Dolphin, which has similar rules and prices.