The 579 series chairs are sure to astonish everyone in your office.  The modern leather seat with built-in lumbar support provides comfortable seating.  Also features 2-to-1 synchro tilt control with adjustable tilt tension, height adjustable arms and heavy duty nylon base. Not to mention the attractively comfortable headrest that comes on the 57906E.  This chair is also GreenGuard Indoor Air Quality Ceritifed. | Office Star Products | | Professional Air Grid® | Black | Best Buy