Airhead ZX-1. Lean on the center hump for control and stability. Recessed knee wells for a low center of gravity; neoprene pads for comfort. V-shaped bottom allows rider to put tube on edge for wake crossings.Four nylon-wrapped handles with molded EVA foam knuckle guards gauge vinyl inner tube encased by rugged 840-denier nylon cover. Quick-Connect Tow System for simple, fast hookup. Airhead Multi-Valve for quick, easy inflating. 60 L x 40 W designed for one rider.