Product Features Prevent dust from falling into the pool and reduce cleaning cost.Reduce the evaporation of water and chemical components in the pool, reduce the damage of water vapor to the pool and equipment, and improve the indoor air environment of the pool.Heating the pool water temperature during the day can reduce heating costs by more than 70%, saving heat and energy.Keep your swimming pool beautiful and clean. Why choose us? Raw materials are made of international standard LDEP. Low-density polyethylene, formula production, high temperature heating, seamless welding, lock the pool temperature, fearless heat loss.Large bubble heat insulation design. Seamless bubble film welding technology, seamless combination of bubble film, firm and reliable, general thermal insulation 70%, reduce heating costs, reduce 90% water evaporationSpecialized formula manufacturing. Provide good heat preservation equipment for your swimming pool.Safe to use, Non-toxic, harmless, anti-aging, anti-UV, non-slip, waterproof, anti-vibration and anti-pressure and long-lasting durability. Trim to fit any pool or hot tub shape easily Product Parameters Material Low Density Polyethylene LDEP Bubble Diameter 16MM Thickness 600 micron Color Blue, Gray, Light Blue Shape Square Usage Always use bubble-side down to boost insulation performance.