Reliable wooden structure made of multilayer and plywood. The bedspring has passed all European and worldwide certification tests and by a single rotation transforms the seating of the sofa in two single beds equipped with wooden-slatted bedspring and removable foam mattresses. All inside metallic parts are accurately covered with fabric. Two armrests available: SMALL and LARGE. It is possible to remove the cover completely and to disassemble the sofa. Structure portante en bois et multiplis.