We have 3 sizes for you to choose from: Suitable for circular inflatable pools with a diameter of 183cm Suitable for round inflatable pools with a diameter of 244cm Suitable for circular inflatable pools with a diameter of 305cm [Keep Your Pool Clean] More time swimming in your inflatable pool and less time cleaning it by POOL COVER this summer.Helps keep your above ground pool free of dirt and debris when not in use. [Keep Pool Water Clear & Water Save] Don't need to add water even passed a few day for last swim because we can reduce water evaporation by 95%.You can reuse the water because POOL COVER keep the pool water clear.Helps keep your swimming pool free of dirt and leave when not in use. [Keep Water Warm] Not only cover your pool, our pool cover also keep the water warm under sunshine. So you can keep enjoy your swimming in the whole season. [Perfect for Easy Set/Framed Round Pools] Great for both foot Easy Set and Metal Framed Round Swimming Pools Rectangular swimming pool can be used either.