Enjoy Longer Swims: Keep your pool warm with this 18ft/5.49m bubble solar blanket, 16 mil thick. It extends your swimming season by maintaining a comfortable water temperature. Easy installation and customizable to fit irregular pool shapes for an ideal solution Solar Heat Lock: This pool solar blanket absorbs natural sunlight through tightly packed micro bubbles, creating an effective heat retention layer. It heats the pool during the day and keeps it warm at night, reducing the need for extra energy to maintain water temperature Durable Outdoor Use: Made from quality PE material, this thermal pool cover withstands stretching and tearing, making it ideal for long-term outdoor use. It withstands prolonged sun exposure without cracking or aging. Note: Avoid using in highly acidic or chlorinated environments for longevity Water & Energy Conservation: The inground pool solar cover effectively reduces water evaporation by up to 95%, meaning less frequent refills and more water conservation