Bungee Trampoline CE approval Jumping mat: made in U.S.A. Poles: Stainless steel,galvanized,or AI available double bungee1.Jumping mat: Made in U.S.A.2.Foam Safty pad:EPE,closed-cell foam covered with PVC(500D,500D)fabric that will not absorb water, mildew or lose shape3.Tubes:galvanized inside and outside4.Springs:super high-strength galvanized5.The tubes could be made of stainless steel or ...