The foil increases the water temperature by up to 8 °C and retains heat in the pool for significantly longer. It reduces heating costs by up to 70% and decreases water evaporation by up to 90%. Additionally, it lowers chemical consumption and is suitable for easy and frame pools. The solar cover also keeps the swimming pool clean. It intentionally features small holes in the center to allow for air and water exchange and to prevent the water from becoming stagnant. Furthermore, the solar cover will not sink in the water during rain. For maximum effectiveness, the air bubbles should face downwards. The solar blanket pool cover rests directly on the water, significantly reducing water evaporation and protecting the water from contamination. Due to lower evaporation and heat gain, the costs for the solar blanket pool cover can be recouped within a swimming season. It is suitable for rectangular frame pools.