Office Seating Standard Features: Synchronized recline with auto-balanced tension No need to adjust tension. Automatic recline tension counter balances your body weight, resulting in perfect balance as you recline. Forward seat flex No knobs or levers needed. Lean forward or perch toward the edge of the seal and Life's seat pan automatically adjusts to support your position. Arm Options: Tension preference selector To per ect the tension adjust the preference lever located at the back left of the chair while in the upright position. Fixed arms: Non-adjustable. f Height Adjustable Arms: Light the lever on the outside of the armpad to adjust arm height. High Performance Height and Fore/Aft Adjustable Arms: Lift the lever on the outside of the armpad to adjust arm height. Seat height adjustment To raise or lower the height, lift the lever on the right side of the chair and adjust to the proper height. The armpads adjust in an orbital motion and lock into a fixed position by pressing the button on the inside of the pad. The arm pads can be positioned to the front or back and in width. Lumbar Options: Height Adjustable Lumbar Sliding seat depth adjustment Using the same lever as the seat height, push down to slide the seat within the 4" seat depth range. Release the lever to lock the seat into position. The lumbar support is held on to the chair with magnets for easy installation and a maximum range of adjustability. To install the lumbar, separate the halves of the magnetic lumbar and place it in the desired position on your chair. Secure it by putting both halves back together around the back supension fabric on the chair. Adjust the lumbar by sliding the lumbar pad up and down the back of the chair. Upright tilt lock To lock the seat in an upright position, push down the lever located on the left side of seat. Lift lever to unlock. Note: Product contains magnets. Consult the lumbar hangtag for more information.