ECO Series Designed to look good and perform even better. The dynamic lines and curves of the chair not only bring a contemporary look, but complements your body as you work hroughout the day. With 12-way ergonomic adjustments, you can adjust the chair to fit you perfectly. The mesh back enhances air circulation for greater comfort or choose the AirMesh seat for molded foam comfort. Thereís more! Both of these amazing chairs offer Synchro-Tilt, Seat Slider, height adjustable arms, and adjustable Lumbar Support as standard features. Itís just more reasons to choose the ECO chairs.