Unbranded WINTER BLOCK 21 ft. Round Blue Above-Ground Winter Pool Cover

The winter Block 21 ft. Round Above Ground Winter Pool Cover is great for keeping your pool in good condition during the cold, winter months, but it will also make getting your pool back into shape in the spring much easier. This pool cover is made of laminated polyethylene sheeting woven with thick, high-density polyethylene stitching, which ensures superior tensile strength and durability. It has also been treated to provide maximum resistance to damaging ultraviolet rays. For the long life of your poo...