Classic Blue Polyethylene 5-Year Winter Cover For Above-Ground Swimming Pools - 21'

Close up the pool safely with the security of this above-ground swimming pool cover crafted with durable polyethylene materials. This durable round or oval cover prevents UV rays from discoloring the water, and the cover while stopping dirt, debris, and algae from polluting water underneath the surface. Pool Mate Classic cover is crafted with durable polyethylene materialsRound or oval-shaped piece fits above ground swimming poolsBoasts a blue colorLightweight piece features heat-sealed seamsBlocks dirt, debris, and algae from infecting pool waterPrevents UV rays from entering the poolIncludes a cable and winch to easily apply with grommets