Blue Wave Bronze 8-Year 21 ft Round Above Ground Pool Cover for Winter– Durable & Weather-Resistant Polyethylene – 4 ft Overlap, Black Underside, Reinforced Grommets, Winch, Cable – Navy Blue;

The dirt defender bronze grade cover has the strength and durability of covers costing twice as much. Rugged polyethylene scrim and coating means this cover can withstand winter's worst. Dirt defender covers are u.v. protected so they will last for-years in direct sunlight. The cover's black underside retards algae growth and heat sealed seams means a crystal clear pool next spring. The big 4-feet overlap ensures a proper fit for above ground pools unlike covers with 3-feet overlaps. Dirt defender covers are held secure with a heavy duty cable and winch tightener that is anchored by rip proof metal grommets. Backed by an 8-year warranty (1-year full rated). This dirt defender cover comes in a dark navy blue with a black underside.