For those of you wondering what would happen if you spent all the day in the bathtub, the Rubber Duck Rider Inflatable Adult Costume is your answer. You'll shrivel up so much that you'll be able to ride the rubber duck that floats in your tub. This humorous disguise includes a person in a striped swimsuit and sandles riding a yellow rubber ducky, as well as a fan/battery pack that requires four AA batteries. 100% Polyester. Costume Includes: belt-clip battery pack, Battery-operated fan. One Size Fits All. Does not include AA batteries. Spot Clean Only.