Executive mid-back chair offers a breathable mesh back; height-adjustable, Variable-Resistance Lumbar (VRL) support; and leather-upholstered cushioned seat to enhance your comfort. Simple tilt mechanism can raise or lower the seat to your desired height using the handle. Seat height adjusts from 18" to 21-3/4". Increase or decrease the tilt tension with the knob control. Arms with soft polyurethane pads adjust in height from 7-3/4" to 10-1/2" and width from 17-1/2" x 19-1/2". Chair also swivels 360 degrees. Black, five-star nylon base (26-8/10" in diameter) is equipped with smooth-rolling, 2-4/25", dual-wheel hooded casters for easy mobility. Weight capacity is 250 lb. Seat measures 20" wide x 18-3/4" deep. Back size is 19" wide x 17" high from seat. Mid-back chair meets or exceeds BIFMA standards.