Swimming Pool Winter Cover 20 x 40 Foot Backed by 10-Year Warranty;

Cover features triple-laminated high-density polyethylene fabric construction with a black underside to inhibit algae growth during the winter months. Our U.V. protected winter covers feature triple laminated inner scrims which are then covered by a weather resistant top-coating and a solid black underside to prevent the growth of algae. Resists acid, alkalis, salt, mildew, chlorine and temperatures to -50 Degrees Fahrenheit! Rugged, heavy-duty water tube loops are conveniently placed every 4 ft. to help hold water tubes firmly in place. Water tubes not included. Pro Strength Polar covers feature heat-sealed seams (not sewn) to prevent water from seeping through the cover into your swimming pool! Please order by pool size, all covers include a 5 foot overlap to accommodate an 18-inch water drop. Pool cover color is Navy Blue. 10-Year Warranty (2 years full).