SkyBound 133" (11' 1") Square Trampoline Mat with 84 V-Rings, FITS 13 X 13' Frames, that USE 7.5" Springs. (Fits Brands Skywalker) (Free Spring Tool Included) (Springs Sold Seperately) Fits 13 X 13 Ft. Frame Size Trampolines. Fits Square Shaped Trampolines. Fits 7.5" Springs (Sold Seperately) Has 84 V-Rings for 84 Springs (Springs Sold Seperately) Designed to Fit Skywalker Brand Trampolines.