The Robelle Ultimate Winter Cover is the highest-quality, most premium, UV-resistant polyethylene solid winter cover for in-ground pools. This cover includes five feet of overlap, which will give you ample material to cover your pool. Please order by pool size, as the overlap goes beyond the pool size listed. Please order a larger size cover if you have steps (or any other irregularity) protruding from your pool. The top of this cover is charcoal, and the bottom side is black to prevent algae growth. Includes a premium quality binding around the entire perimeter of the cover. The Robelle Ultimate Winter Cover features the highest-quality most-premium 14 x 14 scrim. This cover is constructed with the highest-quality most-premium polyethylene material that weighs 5.2 oz./yard2. Both the scrim count and material weight are good indicators of the strength of your pool cover. A cover with the highest scrim count and heaviest material, like the Robelle Ultimate Winter Cover, will last longer than inferior covers. Ultra-premium quality water bag loops are placed every four feet. Grommets at all four corners. The Robelle Ultimate Winter Cover includes a twenty-year warranty.