Belly Bumpers, the inflatable bumping tubes, bring inflatable bumping for kids and adults. Run races and play adapted "bumping" ball games or create your own inflatable bumping game. A blow up bumping game is perfect for letting off some steam. They're like bumper cars for your body! Made of heavy-duty 4mm vinyl with reinforced seams and handles, the bumpers inflate with a pump and promise fun and laughter with inflatable bumping for kids. Ages 13 to Adult. Size: 53" Outside diameter, 18" Inside diameter. Also available in child size ages 5 to 12: #8563. Contains one belly bumper.