Size One size fits most Includes One piece zip up jumpsuit with printed on Sumo uniform, Polyester Sumo style wig with chin strap, Small fan motor is attached to the suit and plugs into a small battery pack with an onoff switch. Note fan must stay on for suit to remain inflated Become a mighty Sumo Wrestler and out weight your opponents when you wear this costume. The Inflatable Sumo Costume for Adults includes a large one piece jumpsuit with a fan that keeps the costume inflated. Professional Sumo is a major sport in Japan. You'll crush the competition when you show up at your Halloween party with this costume. Practice your sumo moves and prepare to wrestle. This costume is available one size fits most. Inflatable Adult Sumo Wrestler Costume