The Chevron Ultra has the same great ergonomic features as the original Chevron and adds fully adjustable/articulating arms, a wider, more contoured seat, a taller back with 5 1/4" of back height adjustment and a new "soft descent" seat height adjustment. High Back Multi Tilter. Features width adjustable arms, infinite position back angle adjustment, tilt tension adjustment, infinite position lock control, infinitely adjustable seat angle and seat depth adjustment. Black Coal.