Sofabed. Wooden structure covered with polyurethane foam. Seat cushion in D35 polyurethane foam. Back cushions in polyurethane foam with D22 + D25 space weight. Wooden slats spring. Orthopedic coil springs mattress cm 13 thick and cm 200 long. Metal feet in Manganese finishing. K.D. model, (sofa can be totally disassembled on need).