The Eurotech Ergohuman features a synchro tilt mechanism with infinite lock, sliding seat, and pneumatic height adjustment. Other functions include: back angle adjustment, seat and back height adjustment, waterfall seat, and arm height adjustment. The Ergohuman is upholstered in black leather with an optional headrest. This high end ergonomic chair is also available upholstered in fabric: Grade 1, 2, and Grade 3 healthcare fabrics. The Ergohuman is available in mesh as well. SEE MORE EXECUTIVE CHAIRS