Keep your pool warm with our 18ft/5.49m solar pool cover. At 12 mil thickness, it helps heat water faster and retains warmth overnight. Easy to install and trim to fit, it reduces evaporation by 95%, saving water and heating costs. Ideal for residential and commercial pools. | Vevor | | Solar Pool Cover, 18 ft Round Pool Bubble Cover, 12 Mil Pools Solar Blanket with Bubble & PE Material | Blue | Best Buy