Archetypal shapes in architectural geometry inspire these historical masterpieces. Designed by the great contemporary architect from the Ticino canton for the interiors of some of his famous buildings, they have become classics in the Alias catalogue, icons of design made in Italy. Main features are the seats seconda, in perforated sheet steel. Chair with arms, with structure in stove enamelled steel, seat in stove enamelled perforated steel sheet with back consisting of two black polyurethane cylindrical elements.