Structure made of metal guaranteed for 10 years. The orthopaedic spring system is made with an electrically welded plastic-coated base for the elements with beds and in harmonious steel guaranteed for 10 years for fixed elements. Different density polyurethane foam padding covered in double acrylic fibre. Cold foamed arms filled with Ilpoflex polyurethane foam. Different density polyurethane foam seat and back cushions covered with a layer of acrylic with cotton cover. Fully removable covers. Equipped with a simple mechanism that enables manual lifting of the back cushion, even when seated. Elements with beds have an electrically welded steel orthopaedic base and 13 cm high spring mattress. The mattress may be supplied to order in Polilatex HT with natural latex.