High-quality Syncron swivel chair in contract quality with Sitness joint for three-dimensional sitting, backrest with integrated lumbar support, height adjustable via Up-and-Down system. Features a large trough seat including a comfortable knee roll for a pleasant sitting posture, with armrests that are height and width adjustable (via screw connection), and soft pad support. It includes a point synchronous mechanism with spring force individually adjustable to body weight and multiple lockable positions. Additional seat depth and seat tilt adjustment are included, along with a polished aluminum base 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.