♊High Grade Material: PE film (polyethylene), which reduces water evaporation, prevents dirt, heats water, and resists UV rays, which can extend the life of the swimming pool and make it durable. ♊UV resistant Pool Cover: The use of a solar cover helps in preventing up to 95% of pool water evaporation. You can fix it with rope to prevent it from being blown away by strong winds on rainy days, and also to prevent the leaves and dust. In summer, the solar cover can heat the water and keep it warm