... Springs: galvanized strong steel wire, rust resistant.4) Frame Pad: 310g/m2 PVC + 14mm EPE + 130g ... 10x10x7.5mFunction:1) Safety Net: Terylene filamentBlack, outside Frame Cover, with black PE sleeve , 6*6mm ... fasten Net Poles to W-Legs quicklyUsage scopeSpecial for kindergarten, residential park,school amusement park, sports ... everybody to contract with us. 2013 large jumping trampoline for sale