a) one side pillow top                                                                           

b) quilting: fabric+3cm memory foam(40kg/cubic meter) + 2.5cm super soft foam (20kg/cubic meter)+ non-woven fabric
c) filling: 4cm egg foam(20kg/cubic meter) + non-woven fabric +one pieces of insulator pad
d) mattress spring: 312 series, 2.2mm and 6 turns                      

e) one pieces of insulator pad + 1cm foam(20kg/cubic meter)