SkyBound Weatherproof Trampoline Mat 96 Rings for 15' Frame 7" Spring 8R Stitching 13.3' Mat Size: 13.3' (160")Mat Diam; Fits 15 FT Trampoline with 96 Spring Holes & 7"L Springs, of All Brands V-Rings: 96 Reinforced Galvanized V-Rings Sewn into the Mat for Extra Strength Material: Heavy-duty Polypropylene with Carbon Coated Durability: Waterproof Surface, UV-Resistant and Fade-Resistant Security: 8-row Stitching Lines to Hold the V-rings Securely in Place