Sofa bed 1. Structure frame: dried hardwood frame and resin board as side board; all Wood frame was special treated by druggery stream drying, preventing Bristletail, water contain 9%-11%, meet the international requirements. 2. Rubber band: imported high grade vulcanized rubber band that has high Resilience and anti-deformation properties (a) back area: width 5cm; the elongation 90% (b) seat area: width 3cm, the elongation 60% 3. Cushions: (a) seat cushion: box coil spring (diameter is 1.9-2.2mm) + 45kg/m3 foam (b) back cushion: 40kg/m3 & armrest: 35kg/m3 All cushions combine with poly foam; mission seat cushions by 9mm plywood. Sofa spec(cm): 1seater: 118w*90d*92h; 2seater: 157w*90d*92h; 3seater: 200w*90d*92h Seat meas.: 49w*50d*46h Arm height: 20 Bed spec.(cm): 2seater-bed: 189l*95w*45h; 3seater-bed: 189l*140w*45h G.W.(kg): 190 n.W.(kg): 180 Conveyance: 22 sets/1*40f+hq Packing: poly bag + epe + more foam protecting legs and corners + woven bag