11' x 11' Blue Solar Cover 12 Mil for Solar Heating Spas and Hot Tubs

Enhanced Warmth: 12-Mil thickness helps raise water temperature by up to 10°F, extending your swim season. Balanced Design: Light blue color provides an ideal mix of heat absorption and retention for optimal efficiency. Energy Conservation: Minimizes evaporative heat loss during cooler nights to help keep water warmer for longer. Safe Usage: For best performance and durability, use only when chlorine levels are below 2.5 ppm and pH is above 7.2. Added Convenience: Use with a solar cover reel for simpler handling and to reduce wear and tear on the cover