The Topstar 3D B to B 40 mesh is an ergonomic swivel chair for mobile working. The mesh backrest ensures good ventilation and flexible, supportive back support. You can quickly adjust the sitting position using the infinitely variable height adjustment. The 3D seat surface allows you to move forwards, backwards and sideways, encouraging active micro-movements and relieving strain on your back and intervertebral discs - ideal for long days at your desk in the office or home office.