Enjoy Longer Swims: This 18ft/5.49m round solar pool cover works as a reliable pool cover, using a 12 mil bubble design to help retain heat and keep water warmer. The pool solar cover supports a longer swimming time while offering an easy-to-trim fit for irregular pool shapes Solar Heat Lock Technology: Designed as a high-performance solar cover for pool, the micro-bubble surface improves solar absorption and insulation. These solar pool covers help warm water during the day and reduce heat loss at night, lowering overall heating demand Durable Bubble Pool Cover: This heavy-duty bubble pool cover is made from tough PE material, built to resist stretching and tearing. Compared to standard pool covers, it delivers enhanced outdoor durability for consistent seasonal performance. These solar pool covers also help reduce debris entry, keeping your pool cleaner with less maintenance Fits Inground & Above Ground Pools: Suitable as a solar pool cover for inground pools and above ground pools, compatible with round or rectangular pool layouts. Multiple size and thickness options allow flexible coverage for different pool setups Water & Energy Saving Pool Cover: This VEVOR solar cover effectively reduces water evaporation by up to 95%, meaning less frequent refills and more water conservation. It also helps slow the evaporation of chemicals, reducing the need for constant maintenance. Enjoy a more sustainable pool with less hassle