... steel,heat monlding,natural palm fiber,anti-bacteria and acarid, high elasticity. Model: 5318 size: 180*200cm, 150*200cm, 150*190cm ... :1.It is dia 2.3mm 6 rings spring adopt high manganese carbon steel, ring around each other. The whole bed ... mesh is heat monlding treatment. The mattress is high elasticity and compressive stress.2. High breathability natural palm fiber, they have the ...