Sun2Solar Blue 20 ft x 40 ft Rectangle Solar Cover | 800 Series | Heat Retaining Blanket for Rectangular Inground & Above Ground Swimming Pools | Use Sun to Heat Pool | Bubble Heating BlanketsBrand: Sun2Solar Color: Blue Features: Free Solar Energy: This solar pool cover uses the suns power to raise water temperature by up to 15 Degrees Traps Heat: Our pool solar cover retains warmth long after the sun sets, helping to maintain consistent water temperature overnight Conserves Water: By reducing evaporation up to 95%, this swimming pool cover helps cut back on chemical use and the need for additional water. Debris Prevention: Stops leaves