- 5-star base made of polished aluminum with five conductive, soft castors - safety gas spring - adjustable seat height - adjustable seat tilt and backrest height - mechanism with synchronous technology ensures active-dynamic sitting - seat and dynamic backrest individually adjustable - high-quality molded foam upholstery with ergonomic backrest cushion for perfect seating comfort - backrest with conductive plastic shell - without armrests - ESD marking - color: imitation leather, black