Ergonomic headrest for the Alera? EQ Series. Turn any EQ Series chair into a executive high-back chair with this easy to install headrest. Headrest is height adjustable, forward or backward adjustable, and at angles for a perfect fit. Headrest includes upper back support which can function as a garment hanger. Color: Black; Material(s): Mesh; For Use With: Alera? EQ Series Chair; Series Name: Alera? EQ Series.