Self-assembly Adjustable seat height This patented chair has the Body-Balance-Tec-Joint that ensures that the lumbar and lower back adopt an ergonomic position Comfortable seat Multifunctional headrest that is adjustable in angle and height Including Syncro-Relax mechanism with an extra large reach The black polyamide base is also suitable for carpets and other soft surfaces The armrests have over soft pads and are adjustable in height and width (via screws) Seat height: 43 - 52 cm Seat width: 48 cm Seat depth: 50 cm Back height: 55 cm Color: black