A sofa evergreen the Pythagorean model of Delta Salotti, enriched by the versatility of the versions available, including the sofa bed, which nothing from the elegant look dellimbottito. It can be upholstered in leather or fabric, has wood structure and derivatives, with high strength webbing. Padding of the seat and backrest are in polyurethane foam. The cushions are removable. Pythagoras a sofa perfect proportions and carefully crafted details.