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Amazon.com : CosySpa Thermal Hot Tub Cover - 3X Sizes / 2X Shapes (Round & Octagonal) | Double Layered Insulated Hot Tub Cover - Save 30% Your Energy Bills | Hot Tub
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Amazon.com : Hadisi Hot Tub Spa Heater Pump Cover,Waterproof Hot Tub Insulated Pump Cover for Multiple Brands (Black,Square) : Patio, Lawn & Garden
![I took a thermal image of my inflatable hot tub - the least insulated places are clearly visible now. : r/hottub I took a thermal image of my inflatable hot tub - the least insulated places are clearly visible now. : r/hottub](https://i.redd.it/nj3gso2wnx561.jpg)