Clear Solar covers are the best available on the market - Why? Because they let the Sun through! It is proven that the more sunlight that radiates through a solar blanket the greater the increase in water temperature. Its simple if you think of a green house effect. The sun is attracted to the clear glistening cover and the heat is transferred to the pool water. Unlike black or very dark solar covers which create darkness under the surface creating an environment for algae to grow quickly, the Clear Premium 14 mil Cover allows it to be on for extended periods of time without concern. A solar cover is your best investment to extend your swimming season and cut heating costs! Our solar covers, made of durable resin, have thousands of tiny air bubbles designed to capture and transmit solar heat to your pool. A solar cover will keep your pool water cleaner by blocking out dirt and debris. Save on chemicals, cut water evaporation by up to 95% and prevent heat loss. A solar cover also takes advantage of the sun's free heat! Typically a 15° temperature rise can be expected.