Amazon.com : Trampoline Pro Jumping Mat - 15ft Round Frame, for 96 Springs, 7" Spring Length, Fits All Same Size Brands, Replacement Mat has 159" Diameter w/ 96 Rings (Springs Sold Separate)
Amazon.com : JumpTastic 127in Trampoline Mat, Fits 12Ft Frame Use 5.5in Spring (Not Include Spring, Mat's Diameter:127in) : Sports & Outdoors