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, and armrests that are height and width adjustable through a screw connection, with soft pad support. The point synchronous mechanism allows for spring force to be individually adjustable to body weight, with multiple locking options. Additional seat depth and seat tilt adjustments are included, along with a polished aluminium base equipped with load-dependent braked safety double castors for carpeted floors. This model bears the GS symbol of the LGA Nuremberg and fulfills all safety-relevant requirements.