Our Trampoline Pad is a one piece design for maximum protection. It is heavy duty, UV and water resistant, high density polyethylene with 1 inch high density closed cell foam. The pad is a full 12 inches wide, leaving no gap between the mat and the springs. The pads also have a 4 side skirt to cover the frame and help keep the pad in place. Simply the best quality trampoline pad with the lowest price on the market. Specifications Fits round 13 foot trampoline Measure Frame Diameter PVC vinyl on the top and the bottom 15 of 1 inch thick padding from the frame to the jumping mat UV coated for added protection EPE thick foam inside Rubber Plastic material Cold crack protected Anti fungalanti bacterial coating Covers the springs and frame Warranty 6 months for manufacturer defects. Will last a lot longer. This item fits a 13 ft frame. Measure from the outside of the frame to the outside of the frame. It should be 13 feet. Expected Life 3 5 Years.