This Robelle Mesh oval mesh winter cover features a 10 x 10 Scrim count (threads per square inch) and a material weight density of 3.1 ounces per square yard. The Gray/Black mesh material has been treated to inhibit damaging ultraviolet rays. Made of polyethylene, this exceptional quality above ground winter pool cover has a 3-ft overlap, allowing the cover to be used on above ground pools with top rails up to 6 inches wide. There are 2 grommets approximately every 4 feet for the use of a cable to secure the winter cover. A plastic-coated cable and winch are included. The overall size of this cover is 15'W x 27'L. It is designed for oval above ground pool. All Robelle Mesh winter pool covers come with a 10-year warranty.