All of our Ergo chairs were engineered with your total comfort in mind. Aesthetics, form and function are merged seamlessly in Ergohuman's efficient design, allowing for minute adjustments to achieve unrivaled support. A synchro-tilt mechanism with infinite lock, sliding seat, pneumatic height adjustment, and headrest, are standard on all Ergo models. The Ergohuman is also 97% post-use recyclable, making it the sensible, eco-friendly choice to outfit your workforce. 30 inches wide x 29 inches deep x 44 inches high Adjustable headrest: available on high-back models Arm height adjustment: adjusts arms up or down for proper ergonomic positioning while seated Back angle adjustment: set the back angle for personalized comfort in a reclined position