12 Mil Pool Solar Cover 20 x 40 ft. Rectangle
This 12 mil solar blanket is great for your pool, your wallet and the environment. It transfers heat from the sun into your pool water and prevents that heat from escaping to gradually raise the water temperature by up to 15 degrees. At the same time, solar blankets reduce chemical loss through evaporation, saving you money. Easy to cut with scissors to fit kidney, oval or irregularly shaped pools. 7 year warranty.