The Robelle superior winter cover is an superior-premium, UV-resistant polyethylene solid winter cover for in-ground pools. This cover includes five' 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 a sand color, & the bottom side is black to prevent algae growth. Includes a premium quality binding around the entire perimeter of the cover. The Robelle superior winter cover features an superior-premium 12 x 14 scrim. This cover is constructed with an superior-premium polyethylene material that weighs 4.5 oz./yard2 both the scrim count & material weight are good indicators of the strength of your pool cover. A cover with the highest scrim count & heaviest material, like the Robelle superior winter cover, will last longer than inferior covers. Superior-premium quality water bag loops are placed every four'. grommets at all four corners. The Robelle superior winter cover includes a twenty-year warranty.