Chair with 5 way swivel base in polished or lacquered aluminum, mounted on castors, fitted with gas-lift mechanism for height adjustment. The shell with medium backrest (112 cm) is available entirely upholstered in leather, customers leather, faux leather, fabric or customers fabric and fitted with selftensioning weight response mechanism. Aluminium armrests are available upon request with a surcharge in the same finishes of the base (BI) or upholstered (BR).