Horizontal Mesh Back Task Chair with synchro-tilt mechanism is designed with comfort and ease in mind. Seat covers in different colors are sold separately so you can personalize your chair to match your decor. Synchro-tilt mechanism allows the backrest and seat to tilt in unison. Back tilts more than seat and is also tension-adjustable. Task chair also features adjustable arms, seat slider and pneumatic gas lift for easily adjustable, seat height from 18-1/2″ to 21-1/2″. Breathable mesh back includes horizontal bands for tighter mesh and a different look. Fabric-upholstered, cushioned seat measures 19″ wide x 19″ deep. Arm height adjusts from 25″ to 31″ high. Weight capacity is 275 lb.