Our solar covers, also called solar blankets, are made to give you the maximum heating and insulation properties, combined with long life. Durable 8-mil or 14-mil blankets are loaded with thermal bubbles that retain heat at night and on cloudy cool days. Our transparent blue cover or Magni-Clear cover helps ensure that the sun's heating rays are reaching your pool water. Your pool will be up to 15°F warmer than an uncovered pool. All our solar covers are U.V.-protected so they last under the most intense sunlight.