Deep cushioned back and seat conform to body contours for proper alignment, posture and all-day comfort. Curved polyurethane loop arms are soft yet durable. Meets or exceeds ANSI/BIFMA standards. Pneumatic seat height adjustment. 360° swivel. Tilt tension and tilt lock controls. Black five-star base with hooded casters. Chair Type: Rolling Chair; Folding/Stacking: N\A; Width: N\A; Depth: N\A.