Light-duty task chair offers black mesh fabric upholstery & a sturdy textured frame. Functions include pneumatic seat-height adjustment from 17" to 21", 360-degree swivel, tilt tension & tilt lock. Seat measures 19-3/4" wide x 17-3/4" deep. Back dimensions are 19-3/4" wide x 20-1/4" high. Five-star base has five 2" dual-wheel casters for easy chair movement.