A solar blanket is a great investment for every pool owner. In fact, in some areas of the country a good quality solar blanket may be all you need to warm your pool water and make your pool more enjoyable. Details: Blue 16 ft. diameter 8 mm thickness Solar blankets will increase pool water temperature by 10 to 15 degrees (or more in season) Significantly reduces heating costs by up to 80% Superior heat absorption and retention Reduces evaporation saving water and costly chemicals Extends swimming season by up to 6 weeks Made from a durable polymer material with thousands of tiny sealed air bubbles Includes a 4-year manufacturers warranty Made in the USA Solar reel not included UV stabilized polyethylene Note: Photo displays a rectangular solar cover that has been custom cut by a customer to fit their pool. This listing is for round solar cover