High-quality Syncron swivel chair in contract quality with Sitness joint (Body Balance) for three-dimensional sitting. The backrest features integrated lumbar support and is height adjustable via an Up-and-Down system. It has a large trough seat with a comfortable knee roll for a pleasant sitting posture. The armrests "H" are height and width adjustable (via screw connection) and include soft pad support. The chair has a point synchronous mechanism with spring force that is individually adjustable to body weight and is multiple lockable. Additional seat depth and seat tilt adjustments are included. The polished aluminum base is equipped with load-dependent braked safety double castors for carpeted floors. This model bears the GS mark of the LGA Nuremberg and fulfills all safety-relevant requirements.