Volt task stool offers comfort, function, and style and adapts to each user with simple comfort controls for added flexibility. Generous proportions and a contoured back deliver optimal comfort. Functions include 360-degree swivel and pneumatic seat-height adjustment from 22-7/8" to 32-3/8". The footring adjusts in height easily with a simple knob for the best position for your legs and feet. The five-star base includes 2-1/2" dual-wheel, hooded casters for easy chair movement. The generously cushioned seat and distinctive V-shaped back are covered in durable fabric. Seat measures 19" wide x 20" deep. The back size is 16-1/2" wide x 20" high. Stool also features a plastic outer back, and frame is available in black only. Stool meets or exceeds applicable ANSI/BIFMA requirements.