This Mesh Task Chair comes with an open breathable mesh fabric that will keep you cool and comfortable during extended periods of work. The contoured 4” high density foam seat cushion provides added comfort. The height adjustable arms provide comfortable and versatile arm rests that can suit your personal preferences. The synchro-tilt mechanism moves the back and seat in unison at a 2:1 ratio and locks in any position throughout the tilt range. The adjustable tilt tension control knob, which is located under the seat, allows you to customize the tension of the tilt.