Three sizes of seats and backs for your perfect fit Executive Back. Generous Seat. Soft descent pneumatic seat height adjustment. Seat depth adjustment. Independent seat and back angle adjustment. Infinitely adjustable seat angle. Waterfall seat edge. Adjustable back angle. Back height adjustment. Tilt lock. Lumbar pressure adjustment. Tilt tension adjustment. Height and width adjustable arms. Articulating arm caps. Assembly not included. Fabric. Fusion Fabric. Graphite.