Simple mechanism with 15°back tilting at original locking position. Black or grey mesh back. Gas lift seat height adjustment. Height adjustable armrests, 70mm travel distance. Arm support in light grey polyamide reinforced with fibreglass with black polypropylene top. Back structure in light grey polyamide reinforced with fibreglass, Grey or Black polyester mesh. Body weight adjustment by means of a knob under the seat. Outer seat in Light grey polypropylene with inners seat shell in plywood with cut-foam. 5-Star light grey nylon base (660 mm) with 50mm PU casters. Black or Grey standard fabric.