Fitness swivel chair with balancing seat. Infinitely variable seat height adjustment with Toplift (LGA tested). Fitness orthosis seat with Body-Balance-Tec joint for three-dimensional mobility of the seat surface. High, contoured backrest with integrated lumbar support, continuously adjustable in height and inclination. Permanent contact mechanism, individually adjustable, continuously lockable. Elegant and stable chrome-plated steel base, equipped with load-dependent braked safety double castors for carpets. Height-adjustable armrest included. This model bears the GS mark of the LGA Nuremberg and fulfills all safety-relevant requirements in this context.