A unique sprocket system on the World of Watersports Aqua Treadmill turns this inflatable water tube into a human powered vehicle that enables you to move across the water at speeds up to 10 mph. You can also steer by putting all your weight onto one side or the other. A see-through construction on the body lets you easily see where you're heading. The Aqua Treadmill with cushioned cockpit easily functions as a floating island with shade when you're not riding behind a boat. High profile with bright colors makes the Aqua Treadmill highly visible on your favorite body of water. Features 8 drainage ports and grommet with 10' rope for tying off when lounging. 48" high cockpit. 510-lb. weight capacity. 74" x 74" x 61".