a) one side pillow top
b) quilting: fabric+ Dacron(300g/sq.meter)+2cm foam(30kg/cubicmeter)+ non-woven fabric
c) filling: 2cm foam(30kg/cubic meter)+non-woven fabric+ insulator pad
d) mattress spring:312 series,5 turns,2.3mm
e) insulator pad+ non-woven fabric