Airhead Shockwave 2 Topside stabilizer fins help riders stay on the tube, and keep riders separated Tough heavy gauge virgin vinyl bladder, fully covered with a durable double-stitched nylon cover EVA foam body pads protects knees and legs, foam filled handles with EVA knuckle pads for comfortable gripping Kwik Connect rope hook-ups, patented Speed Safety Valve for inflatating and deflating Designed for 1-2 Riders, 70 in. x 67 in. (deflated)