Laminated polyethylene sheeting woven with thick, high-density polyethylene stitching ensures superior tensile strength and durability. All covers are treated to provide maximum resistance to damaging ultraviolet rays to inhibit deterioration and increase longevity. In-ground pool covers come with standard holding straps for water tubes, optional reinforced webbed border for additional strength and durability and feature conveniently positioned, corrosive-resistant grommets for easy securing.