The seat and backrest are covered with leather or wide range of coloured fabric. The height of the chair may be adjusted by using the pneumatic cylinder. An anti-shock synchro mechanism provides 5 operating positions. Other adjustments include backrest tilt angle and stiffness control. The armrests are adjustable to three directions, and come in a choice of black or polished aluminium, with black polyurethane armpads. For the base, there is an option of black polyamide or chrome aluminium. Also, the 65mm castors are suitable either for soft or for hard flooring.