This high-back chair features swivel/tilt control with tilt lock, which allows the user to easily lock the chair in upright position. The contoured seat is more generously sized. Other fine-quality features include pneumatic height adjustment, and a waterfall front, for enhanced comfort.Seat swivels 360 degrees. Gas lift seat height adjustment. Smooth seat tilting action. Tilt tension adjusts easily. 7-position adjustable height arms. Arm width can be adjusted 2-3" at time of assembly. Built-in lumbar support. Stain-resistant fabric. Standard casters included. Optional glides (GLIDES) and hard floor casters (HF-CASTER) available separately. Weight capacity 250 lbs. Fully upholstered back. Meets or exceeds ANSI/BIFMA standards.