The many Black Jack solutions can be seen in the armrests, the bases and the seats. The former comes in two different options: wide or narrow. The various modules can be embellished with a Canaletto walnut, lacquered or leather-covered base or just with the seat on the floor for a more essential line. The seats stand out through their smooth or quilted finish with topstitching. All the various solutions can be integrated with each other, giving rise to a personalized and structured composition that fully reveals the soul of Black Jack. The basic structure is in 18 mm poplar plywood with internal uprights still in poplar plywood. The inner and outer part is honeycombed in 4 mm poplar plywood. The plywood seat is strapped with 6 cm elastic webbing. The pad above the backrest is made from 30 grf density elastic, the front of the side and the outer bands are padded with load-bearing 35-density polyurethane foam; the inner part of the backrest has double density 25fee in the lower part and 18 elastic on the upper part, covered with 200 gr acrylic wadding. The front of the armrest and the upper part are in load-bearing 30, covered with 200 g acrylic wadding. The seat padding is in double-density polyurethane foam: load-bearing 30 in the front part and 35 prf elastic in the rear part, all covered with a 2 cm memory foam sheet, covered in a 150 g acrylic layer shell. The base is in veneered or leather-covered 25 mm poplar plywood. The cover is not removable.