3 lever ergonomic mechanism with seat height, seat angle & back adjustment. Upholstered in stunning Breathe Black fabric. Fully supportive highback with pronounced lumbar. More support Luxe seat’s 70mm high density structure provides ultra comfort and support for those intense days in the office. More space Luxe seat’s increased width and depth (530w x 500d mm) brings a new dimension to the Mozart task chair. Reinforced nylon/fibreglass star bases are extra strong. Lifetime guarantee on gaslift.