• Designed in three seat sizes and two back sizes to accommodate many body shapes. • The upper back shape encourages free lateral movement. • Features a weight sensing synchro-tilter mechanism (8) that requires no tilt tension adjustment. • 4” adjustable lumbar area for personalized comfort and support is standard. • Standard with Global’s high quality Soft Descent™ 4” travel pneumatic lift which slowly and gently lowers the seat height of the chair making it easy to obtain the exact seat height you desire. • Standard with 4” travel height adjustable arms (E2). • Standard with a five prong, injection molded, fiberglass reinforced nylon B7 base with C82 dual wheel carpet casters.