SkyBound 15ft JumpKing Trampoline Mat with 90 V-Rings (FITS 7" Springs) Designed to Replace Trampoline Mats for JumpKing Trampolines Fits 15ft JumpKing Trampolines (Measure your steel trampoline frame) This Trampoline Mat has 90 V-Rings (Your trampoline should have 90 springs) Compatible with JumpKing Trampolines using 7.0" Springs (Measure several of your original springs unstretched, from hook end to hook end) Also compatible with Bazoongi, Orbounder and other brands of trampolines