Swing smoothly from task to task on this Mid-Back Black Leather Executive Swivel Office Chair with Rounded Back and Arms. The mid-back style chair offers support to your mid-to-upper back region and is ideal in many spaces. Wrapped in genuine leather upholstery and a curved lumbar area offers incredible support to your back. Curved arms relieve pressure off your shoulders and neck and are ideal while working on pull-out keyboard trays. Turn the tilt tension adjustment knob to increase or decrease the amount of force needed to rock or recline. Lock the seat in place with the tilt lock mechanism. The pneumatic adjustment lever will allow you to easily adjust the seat to your desired height.