Mattel Games Uno Adult Costume This night is going to be wild! When you have the Mattel Games Uno Adult Costume, you can dress up as the simple card game that kids and adults still love to play when everybody is gathered around the table. This is a sandwich board style costume that is easy to add to an outfit and instantly makes you into a deck of Uno cards. Dress up as one of the four primary colors from Uno or go with an all-black outfit for a classic look. Item cannot be shipped to P.O. Boxes