Sunsolar Winter Mesh Pool Cover Inground 20X40 Rectangle Swimming Pool with Water Tubes Environmentally Friendly Cover Saves Time and Money in the Spring! All Arctic Armor rugged mesh covers have a 5' overlap with loops every four feet to secure water bags Corner grommets allow for extra tie down in windy areas Rugged double stitched hems are triple reinforced for strength Backed by an 8 year warranty.