15ft JumpKing Trampoline Mat with 96 V-Rings (FITS 7" Springs) Fits 15' round frame with 96 v-rings for 7" springs Frame Size: 15 feet (Measure outside bar to outside bar). Spring Size: 7 inches (Remove one spring, measure from hook to hook). Spring Count: 96 (Springsare SOLD separately). Made of U.S.A.PermatronFabric for the ultimate rebounding surface!