Improves Posture: This adjustable leaning chair is best with a standing desk, giving you the benefits of standing and the relief of sitting. Note: You will use different muscles than normal, so acclimate yourself by changing positions during the day Height Adjustment: Change the height while seated with the pneumatic spring mechanism for smooth and fast transitions (Adjustment Range: 24 to 46.3). Use either the hand lever or foot pedal to change the height