Details: After many years of research it's been proven that the best blanket for raising and maintaining water temperatures in your pool is a clear solar blanket. That's because the blue/blue blanket allows the sun to penetrate and warm the pool; unlike experimental solar blankets that feature thick, reflective, aluminized coating and reflect the sun away from your pool. Plus, Clear-Tek Solar Blankets last longer because they maintain their flexibility and don't become brittle like dark colored, opaque blankets. Our Clear-Tek Solar Blanket works great. By allowing the warm rays of the sun to penetrate your pool directly, it raises water temperatures by as much as 15° Fahrenheit. At night the blanket helps seal in the warmth to maintain optimal swimming comfort. Pool owners love the blue color of their pool water, and our Clear-Tek Solar Blankets let the blue shine through. The blankets keep debris from entering your pool, and they prevent chemicals from dissipating due to exposure.