The ideal DELUXE grade cover. A solid 8x8 scrim (64 threads per square inch), yet light weight and durable. These are the best general purpose winter covers on the market. Above-ground covers come with winch and cable. All covers have an 8 year limited warranty. All winter covers are made with triple-laminated, heat-sealed seams for extra strength. These covers are also made with non-rusting aluminum grommets, a polypropylene cord sewn into a double-stitched hem, black yarn and UV inhibitor.