High-Back Mesh Chair offers a mesh back and seat with plastic-coated steel frame. Ergonomically designed back accommodates the natural curvature of person's back. Arms with polyurethane arm pads adjust in height and width. Functions include pneumatic seat-height adjustment from 18" to 21-1/2", seat-glide mechanism, 360-degree swivel, tilt tension and synchronized knee tilt. High-back chair meets the CA117 fire-retardant standard.