Warm your pool more efficiently and keep it cleaner with this 12 mil solar pool cover. The bubble surface is designed to capture sunlight to help increase water temperature over time and support heat retention on cooler nights. Used bubble side down, the cover also helps reduce evaporation and helps keep leaves, dust, and other debris out of the water, which can make routine maintenance easier. Made from Pe material, this pool blanket is suitable for many pool shapes and can be trimmed with scissors for a better fit. When not in use, fold the cover and store it in the included handled carrying bag for compact storage and easy transport.