Biomedically efficient design. Adjustments in saddle height and fore-aft seat positioning allow for maximum total tension and force generating capabilities as well as neutral knee position. An excellent group cycling bike at an affordable price. Comes completely assembled w/ welded frame and handle bar. No other cycle is more solid or features more stability. Plus the resistance features oversized, center pull brake pads controlled by a five position "click stop" lever located conveniently near the handlebar. With the revolution cycle's direct drive you pedal both forward and backwards, w/ or w/out tension. There are no gears to strip. No chain to break. Not only is it virtually silent, but the fiber belt completely eliminates chain breakage, the biggest cause of health club cycle downtime. Measures 18" wide by 46" long. Weighs 96lbs. Each cycle is shipped in its own carton (truck shipment only). Welded frame, no nuts and bolts. Each cycle comes w/ its own spare parts kit. Lifetime guarantee on frame. 1 year on parts.