This pad is designed to fit 15 foot trampolines with a maximum spring length of 8 inches Greatly reduces the risk of jumper injury by completely covering your trampoline's steel springs and frame with a cushion of 1/2" tapered padded foam SkyBound safety pads are made with a soft, weather-resistant outer fabric and a heavy duty tear resistant bottom layer The UV resistant outer layer shell is manufactured with high density PVC on top and heavy-duty PE on the bottom Sized to fit or replace pads for Skywalker, JumpKing, BouncePro, and other trampolines.