A solar pool cover, or solar blanket, is a thin and lightweight sheet made from a special UV resistant plastic. Each blanket is double-sided, with one side smooth and the other similar to bubble wrap. Just like a regular lid on a pot, covers trap in heat and reduce evaporation while shielding unwanted debris from entering your water.

Pool solar blankets and covers help retain the sun's heat and reduce evaporation. This not only keeps the pool warmer at night but can also extend your swim season well past summer without the use of a heater. Covering your pool (or spa) can dramatically cut the expense of heating it and keeping it warm when not in use.