Pure Support Calf Compression Sleeve The lateral movement combined with the robust steel frame and 66 lb. flywheel positioned in back, eliminates the most common wear and tear issues that plague traditional (fixed) commercial stationary bikes today. Challenge balance, full-body coordination and proprioceptive skills Improve endurance, speed and agility for sport Identify and help correct muscle and joint imbalances. Benefit from greater joint mobility (especially, hips, back and knees) as the bike moves with your bo