Solar Heating: Using solar energy, this above ground pool cover can heat your pool water, allowing you to heat it up in advance without additional heating costs. It also helps maintain the water temperature, extend your swimming season and let you enjoy a warm pool. Safety Guarantee: Additional drainage holes in the middle of the winter pool protection cover prevent possible collapse due to water accumulation. Equipped with a 360° cord lock design, it prevents children and pets from accidentally falling into the pool, thus increasing safety. It is easy to install and remove, allowing for quick use. Widely Used: Our safety pool cover is universally compatible and suitable for various scenarios, including round trampolines, round swimming pools, fountains, pet pools and more outdoor furniture. You don't need to buy different covers for different equipment, saving you unnecessary costs. Note: The data is all measured manually. Due to light and display differences, there may be 1-3cm