STYLE, DURABILITY AND COMFORT All of our Ergo chairs were engineered with your total comfort in mind. Aesthetics, form and function are merged seamlessly in a single design, and allows the Ergo chairs to be minutely adjusted to achieve unrivaled ergonomic fine tuning. A synchro-tilt mechanism with infinite lock, sliding seat, pneumatic height adjustment, and headrest are options on all Ergo models. Tilt Tension Control Tilt Lock Back Angle Adjustment Synchro-Tilt Seat Height Adjustment Waterfall Seat Back Height Adjustment Seat Depth Adjustment Arm Height Adjustment Swivel Arm Arm Depth Adjustment Adjustable Headrest on High-Back Model Greenguard Certified Overall Dimensions: (w x d x h) 26.4 x 26 x 39.4-44.9 Seat: (w x d) 19.9 x 19.3 Back: (w x h) 20.7 x 22 Seat Height: 18.1 - 21.6 Weight: 62