Breathable ProGrid Back with Builtin Lumbar Support One Touch Pneumatic Seat Height Adjustment Back Height Adjustment Multi Task Control Height Adjustable Arms with Soft PU Pads Seat Available in Coal FreeFlex or your Choice of Custom Fabric Heavy Duty Nylon Base with Dual Wheel Carpet Casters This product has received GREENGUARD CertificationBreathable ProGrid Back with Builtin Lumbar SupportOne Touch Pneumatic Seat Height AdjustmentBack Height AdjustmentMulti Task ControlHeight Adjustable Arms with Soft PU PadsSeat Available in Coal FreeFlex or your Choice of Custom FabricHeavy Duty Nylon Base with Dual Wheel Carpet CastersThis product has received GREENGUARD Certification