Arctic Armor Winter Covers, 21 ft. Round Pool Size, 25 ft. Cover Size (WC806-4)

Heavier woven polyethylene scrim and coating makes this cover stronger and able to withsatnd wind, sleet and snow. The cover is U.V. stabilized to protect it from the harmful effects of the sun. It features a black underside to retard algae growth and heat sealed seams to ensure a crystal clear pool next spring. The 4 foot overlap means this cover wont stretch and rip like smaller 3 foot overlap covers. This cover is held secure with a heavy duty vinyl coated cable and tightener that is anchored by rip proff metal grommets. this cover is backed by a 12 year limited warranty (2 years full rated) and is forest green with a black underside.