HÅG SoFi Task Medium BackAt the core of a HG chair our unique Balanced Movement Mechanism works to intuitively keep you in balanced motion. A HG chair inspiresyou to vary your postures. A centrally placed tilting point intuitively keeps you in balanced and continuous motion. As the seat and the backrest are linked together, the seat front rises when you lean backwards and stimulates your ankle movement. The seat lowers as you lean forward to work. Sitting in a HG SoFi creates