Pool Mate 3521-4PM Heavy-Duty Blue Winter Pool Cover for Round Above Ground Swimming Pools, 21-ft. Round Pool
Brand: Pool Mate
Color: Blue
Winter pool cover to be used with traditional above ground swimming pools - Solid material will not let water pass through
Pool Size: 21 Foot Round - Cover Size: 25 Feet (includes overlap in total)
Heavy-duty polyethylene material - All seams are heat sealed for better performance
4 foot overlap (Includes 4 feet of extra material beyond pool size, making this cover easier to install, included in cover size above) - Includes winch and cable, which should be used to secure the cover through the grommets