This premium jumping mat is to fit your 15 ft-framed round trampoline with 108 spring holes. Also the 15' trampoline need to have 108 7' springs. It does not fit if the spring numbers are not match with what we listed. Made with Permatrom polypropylene, it is rather tough yet flexible. It continues to offer ultimate bouncing enjoyment even if your original mat has worn out and accomplished its mission through years of jumping practice, at a fraction of the cost of a new trampoline! Features: Mat Size: 15ft:159" Mat Diameter-(13.2ft mat). Only fit 15ft round trampoline! Mat is smaller than the trampoline itself. Color: Black Material: Tensile Polypropylene with Carbon Coated for Ultimate Rebounding Experience Durability: Waterproof Surface, UV-Resistant and Fade-Resistant to Stand Years of Use V-Rings: 108(15') Reinforced Galvanized V-Rings Sewn into the Mat for Extra Strength Fits Round Trampoline with Spring Holes Factors to be taken into account of before purchasing: 1. Trampoline Frame Size - Measure outer diameter of the frame in at least 2 different places when it is fully assembled. 2. Mat Size - Check your old mat diameter of the edge fabric excluding the V-rings when it is fully extended. 3. V-ring Quantity - Count the ring quantity on your current mat or spring holes on the frame. 4. Spring Size - Make sure the distance of hooks from tip to tip fits. Package Content: 1 x Round Trampoline Mat with V-rings Please note: Mat is smaller than the trampoline itself.