Freetime Fun Premium Winter Pool Cover 21' Round for Above Ground Pools - Extra Thick & Durable Pool Cover with Tear-Proof, UV-Resistant, 1700D Waterproof and Weatherproof Fabric

The polyethylene coating on our Frostguard covers is thick loaded with UV stabilizer to protect it from the damaging effects of sunlight. The black underside of the cover retards algae growth and insures a clean pool each spring. Frostguards super scrim, coated with our thick UV protected coating, makes these cover resistant to cold as low as 30 degrees below zero! Frostguard comes complete with a plastic-coated cable and tightener system to insure the stay in place all winter. Our covers have a 4 ft. overlap to insure a proper fit on all pools. 8 YEAR FULL WARRANTY- Frostguard super scrim covers are the strongest pool covers you can buy. If you are tired of replacing your flimsy cover every other year, this cover may be for you. Superior materials and workmanship allow us to back Frostguard with an 8 YR Full Warranty- no prorations! If the cover material fails in the fist 8 years, we replace it at no cost to you!