This combo pack includes the Airhead G-Force 1-3 rider towable tube and the SportsStuff Towable Booster Ball. The Airhead G-Force towable tube features 6 deluxe nylon-wrapped handles with neoprene knuckle guards to provide a secure and comfortable grip. The Airhead G-Force has a tough, 30-guage virgin PVC bladder, and is fully covered with an 840-denier, double stitched nylon cover. The included Booster Ball is a custom towable tube, tow rope with an inflatable buoy in the middle. The Booster Ball system provides a way to keep a towable tube rope elevated out of the water during the ride. It also increases visibility. The increased height of the tube towline reduces line drag and absorbs shock to allow for quicker starts and reduced rope spray.