O'Brien Shock BallThe Shockball elevates your towable experience by keeping the rope out of the water, both increasing boat fuel economy and reducing the amount of water that gets splashed into the tube. Features 2 5 foot take of section allow the position of the ball to be adjusted to better fit your specific needs Riders: up to 4 Rider Towable Bladder: 30 Gauge Valves: 1 Lightning Vlave Rope Total: 60' Size: 41" X 22"