Saris Mag Smart Bicycle Trainer

Saris 9004 Magneto Bicycle Trainer Stay strong all year long. The Saris Magneto Bicycle Trainer is designed with PowerBand technology that allows resistance levels to vary with cadence or gear shifts. Centrifugal forces automatically adjust resistance via sliding magnets and springs. Features include: The world's first and only mag trainer with progressive resistance. Exclusive Power Band Technology gives you access to a wide resistance range - from easy spins to lung-burning climbs - without ever touching the unit. Cam-Lever tightens resistance unit with one movement. No adjustment or external shifting device required Training Video included Manufacturers Lifetime Warranty