This comfortable Sitness 40 office chair offers you an ortho seat and a 20.0 cm high backrest with integrated lumbar support, which you can adjust in height and depth This allows it to be perfectly adapted to your size The infinitely variable seat height adjustment guarantees optimum sitting comfort. This chair is suitable for people up to 192.0 cm Its integrated seat joint provides three-dimensional mobility (BODY-BALANCE-TEC), supporting your pelvis and thus relieving the strain on your back.