Steel structure with springs in music wire steel, guaranteed for 10 years. Polyurethane foam padding in different densities, upholstered with composite acrylic fibre. Arms cold-formed in "ILPOFLEX" polyurethane foam. The seat cushions are in polyurethane foam in different densities, upholstered with acrylic fibre layer and a fine cotton cover, while the backs are in Resinpiuma. The backrests can be supplied in Resinfiocco upon request. The covers can be removed from all pieces.