The breathable mesh back and seat task chair is designed with comfort and ease in mind. The chair features a technology called a Synchro-Tilt Mechanism. This allows the backrest and seat to tilt in unison. The back tilts more than the seat with a 2:1 ratio and it also includes a tilt tension knob which allows you to adjust the tilt tension for optimal support. The chair also features height adjustable arms, a pneumatic gas lift that allows for easily adjustable height and it has a maximum weight capacity of 275 lbs. The chair has a 27" nylon base and 2 -inch hooded, double wheel, casters.