Aluminum frame resists rusting and corrosion for long-lasting performance class after class. Friction-free Virtual Contact Resistance for smooth, quiet operation. On-demand Smart Release coasting safer for user's knees than fixed-gear-only bikes. Assembly required. 43"L x 20"W x 48"H; 106 lb. Optional LCD MPower™ Console displays telemetry heart rate, calories, rpm, and total time; requires 2 C batteries (not included). Truck delivery.