7 x 7 ft Pool Hot Tub Solar Cover,16 Mil Heavy Duty Trimmable Floating Thermal Blanket Spa Bubble Cover for Hot Tub Inground Pools Swimming Insulating Solar Heating. Easy to Use: the spa pool blankets are easy and convenient for you to use, you just need to put them over your hot tub or swimming pool to help retain heat, which can reduce evaporation and keep your water clean, bringing much convenience to you.
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