... /500D) clothFoam of pad: EPE, closed-cell foam that will not absorb water, mildew or loseshapeTubes: double-galvanized for inside and ... high-strength galvanizedApproved by CE certificate Company detail: Item No.ON-884Size customized CertificatesISO9001,CE, TUV-GS, SGS, ETC. MaterialA ... pad: EPE, closed-cell foam covered with PVC fabric that will not absorb water, mildew or lose shape.D. Springs: Super ...