High-quality Syncron swivel chair in contract quality with Sitness joint 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 are height and width adjustable and include soft pad support. The chair has a point synchronous mechanism with spring force individually adjustable to body weight and multiple lockable positions. It also includes additional seat depth and seat tilt adjustments. The polished aluminum base is equipped with load-dependent braked safety double castors suitable for carpeted floors. This model bears the GS mark of the LGA Nuremberg and fulfills all safety-relevant requirements.