The frame is made of domestic, well-seasoned and knot-free softwood plus birch plywood and fiberboard. Seat and inside arms are covered with natural leather or fabric. Outside arms, front panel and inside back are covered with imitation leather or fabric. Zigzag springs. Seat cushions are filled with high resiliency polyurethane foam core wrapped in soft polyester fibre. Back pillows are filled with high resiliency polyurethane foam mix. The finished back, so that the sofa can be placed in the middle of the room. Sofas corner can be switched according to needs.