A. Jump Mat : PP
B. Foam Pad :EPE,waterproof closed-cell foam, not easy to lose shape
C. Pad: 0.45mm thickness PVC,Anti-water and Anti-mildew PVC
D. Tube: Galvanized Steel Pipe Powder Coated
E: Spring: 19cm not extend length,super high-strength Chrome plated, of good elastic performance.
(Different material is available at your demand)