Breathable ProGrid Back with Builtin Lumbar Support One Touch Pneumatic Seat Height Adjustment Back Height Adjustment Multi Task Control Seat Available in Coal FreeFlex or your Choice of Custom Fabric Heavy Duty Nylon Base with Dual Wheel Carpet Casters GREENGUARD Indoor Air Quality CertifiedBreathable ProGrid Back with Builtin Lumbar SupportOne Touch Pneumatic Seat Height AdjustmentBack Height AdjustmentMulti Task ControlSeat Available in Coal FreeFlex or your Choice of Custom FabricHeavy Duty Nylon Base with Dual Wheel Carpet CastersGREENGUARD Indoor Air Quality Certified