The Humanscale® Freedom office chair is our most advanced option because it is so simple to use and offers a comfortable, customized sit. It moves with you throughout the day, adjusting with your body as you shift your weight and position. The armrests move in tandem to eliminate uneven arm positioning. Enjoy support from the headrest that features five inches of height adjustment to promote healthy posture. Additional lumbar support comes from Freedom's tri-panel backrest that naturally cradles your back without having to adjust using knobs and levers.