The Ergo Hi Back-Mesh is 97% post-use recyclable, and like all of our Ergo chairs, they 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.