Solar Pool Cover, Durable 16 mil 16 × 32 ft Pool Covers for Inground & Above Ground Pools, Solar Pool Heater, Rectangle Solar Blanket with Bubbles, BlueBrand: Real Relax Color: Blue(16mil) Features: Fully Utilizing Solar Energy: Absorb solar heat and transfer it to the water, lowering heating costs and reducing nighttime heat loss to keep water warm(Bubble Side Down). Keeping the Pool Clean: Prevent debris and fallen leaves from getting into the water, so as to reduce maintenance cost. Reducing Water Loss and Rate: Covering the pool with the solar pool cover when not in use can reduce evaporation by