Features: Magnetic resistance unit provides a quiet and frictionless ride Linear resistance boosts workout intensity to match each pedal stroke and gear click Mag+ comes with convenient, adjustable handlebar-mounted shifter Foldable Classic frame with spring-loaded, bolt-action lever External, self-cooling mechanisms, including patented fan design, keep unit performing better, longer Alloy, precision-machined alloy resistance roller reduces tire wear and slippage Steel quick-release skewer included for common road and mountain bike frames Compatible with Zwift and other indoor cycling apps Includes one month subscription to Rouvy virtual training app Steel quick-release skewer included for common road and mountain bike frames Thru Axle Adapter sold separately for 142x12mm and 148x12mm bikes Compatible with indoor cycling apps when paired with your favorite speed or cadence sensor Made in the USA