Managerial mid-back chair with active lumbar support features a mesh screen back. Mesh screen back provides increased breathability while adjustable padded lumbar support maintains the natural curve of your spine. Functions include one-touch pneumatic seat-height adjustment, 360-degree swivel, tilt, tilt tension, tilt lock, and synchronized knee tilt (2-to-1 synchro tilt). Mid-back chair features a thickly padded contoured mesh seat and height-adjustable arms with soft pads. Seat size is 20" wide x 19-1/2" deep x 3" thick. Back measures 22-1/2" wide x 25-3/4" high. Distance between arms is 19". Heavy-duty metal base has a five-star design and oversized dual-wheel carpet casters.