This is an Ergonomic High Back, 2 lever chair. - Navy This chair has a supportive High back backrest, with a powerful lumbar area. the backrest combines a soft surface feel with powerful lumbar and upper back support. the chair has a rugged 2 lever control featuring separate adjustments for gas lift height and backrest angle. A floating back support mode can be selected for the chair and can be locked at any angle. Comes with a contoured seat providing comfort and support Back Rest Height: 460mm Seat Depth: 480mm Seat Width: 470mm Recommended maximum user weight 140kg Please note added extras can be added to this chair.