Sculptured seat and back cushions provide lateral and lumbar support for comfort. Impact- and scuff-resistant molded arms, with curved tops, enhance forearm comfort. Black base and frame. Pneumatic seat height adjustment. 360° swivel. Tilt tension control, tilt lock. Seat: 20-1/2w x 18-1/2d. Chair Type: Rolling Chair; Folding/Stacking: NA; Width: 24 1/2 in; Depth: 26 1/2 in.       Global Mid Back