Harry Bertoia fled ltaly when be was fifteen to study sculpture at the Institute of Technology of Detroit. In 1937 he become teacher at the Detroit School of Arts and Crafts and at the Cranbrook Academy of Arts. He was born as a painter and sculptor in his early career he made a lot of things, working in many different fields, designing even jewels. During the '40s he started to design furniture. “ Space goes through them-writes Bertoia about his chairs-looking them we can notice that they are made by air, like a sculpture ”. Even realising that a chair design needs functional solutions (and be found them out, his chairs are really confortable), he considers chairs like sculptures in the space. He gives a lot of importance to space, colours and to the metal characteristics. In his chair of 1952 all the elements are hand-made with an elaborate process. Bertoia as sculptor turns his architectural interest toward form and metal, to create the chair he used a diagonal square, slightly deformed: movement of forms with good results. The chair is light and confortable; with optional of padded seat, an amateur piece. Bertoia ranks as one of the most fashionable chairs designer of the '50s; the careful detailing and feeling of space reflect completely the aesthetic concern of his architecture. Creating sculptures be develops a lot of new metal chair designs, perfect expression of technology and creative arts. Today his chairs are well known all over in the world.