Alera EQ Series Ergonomic Multifunction Mid-Back Mesh Chair, Aluminum: * Synchro-Tilt mechanism offers customized support * Breathable, elastic polyester mesh seat and back * Easy reach seat levers for height and back adjustment * Soft arms are adjustable up and down front to back and at angles * Adjustable headrest offers all-day comfort * Five-star base with casters for easy mobility * 360 degree Swivel * Dual-action tilt * Multi-task control * Pneumatic seat height adjustment * Posture lock * Seat glide mechanism * Arms included