SkyBound Trampoline Pads (Choose Your Size) Pad sizes are measured in feet and are determined by the diameter of your trampoline frame. Please ensure the diameter of your trampoline's frame matches the pad's diameter. SkyBound's Trampoline Pads are designed to provide the best value without sacrificing safety and quality The UV resistant outer layer shell is manufactured with high density PVC on top and heavy duty PE on the bottom. Stuffed with 1/2" thick closed-cell EPE foam designed to reduce the risk of injury by protecting the jumper from direct contact with your trampoline's steel springs and frame For immediate customer support, contact SkyBound at 888-891-4689