The SUPREME PLUS line of winter cover protection come with a full reinforced hem. A full 12x12 scrim (144 threads per square inch) for the person who does not want to compromise durability and quality. Above-ground covers come with winch and cable. All covers have a 13 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.