The Dura-Guard Mesh pool cover is a extra heavy-duty mesh winter cover. Mesh pool covers allow water to pass through their material. This winter cover is intended to be used during the off-season. Please order by your pool size, as the overlap goes beyond the pool size listed. This cover includes a 3 ft. overlap. If you have a very large top rail, please consider a larger pool size. Includes a extra heavy-duty binding around the perimeter of the cover that prevents against wear and tear, helps keep grommets in place and adds to the life expectancy of this cover. 2-grommets are placed on center every 4 ft., with these grommets, you should use the included winch and all-weather cable to secure your pool cover. For extra securing, cover clips and cover wrap (both sold separately) are suggested for pool closing. No other method of installation is recommended. The cover should be able to comfortably float on the pool water without excessive stress. Includes a 12-year warranty. Color: Gray and Black.