Martin Furniture Commonwealth Mid-Back Chair, Graphite Fabric Mid-back desk chair available in Black leather or Graphite fabric upholstery Thick contoured cushions with generous seat area; padded nylon loop arms Pneumatic gas lift features height adjustment, knee tilt control, and tilt lockout feature Heavy-duty nylon base with 5 casters for maximum stability and maneuverability Height adjust from 40 to 43 inches high; 15-year limited warranty