Let the sun warm your pool by up to 15°F! Our durable covers provide effective warmth for your swimming pool. Thermal bubbles can increase your pool?s temperature up to 15 degrees Fahrenheit. These innovative cells trap and transfer heat keeping your pool warm even on cloudy days and cool nights. For optimal heating the transparent blue polymer allows maximum sunlight to reach the depth of the water. Our UV-protected blankets are designed to withstand years of direct sunlight. Keep your in-ground swimming pool warm with a Rectangular 12-mil Solar Blanket. Designed to last and backed by a 5-Year Warranty our solar blankets are designed to outlast and out-perform Intex pool covers.