Executive mid-back chair offers a breathable mesh back; height-adjustable, Variable-Resistance Lumbar (VRL) support; and upholstered cushioned seat to enhance your comfort. Simple tilt mechanism can raise or lower the seat to your desired height using the handle. Increase or decrease the tilt tension with the knob control. Functions also include 360-degree swivel and height-adjustable arms with soft polyurethane pads. Black, five-star nylon base is equipped with smooth-rolling casters for easy mobility. Weight capacity is 275 lb. Mid-back chair meets or exceeds BIFMA standards.