Therm-ic Battery Boot Heaters with One-Size-Fits-All flat insoles
This is the easiest way to heat your boots! The one-size-fits-all flat insoles have the heating elements preinstalled in the toe area. All you need to do is trim the length of the insoles and slide them in your boots.
So what's the difference in batteries?
All Therm-ic batteries produce the same amount of heat. The difference is how long the heat will last. The more expensive the battery, the longer the battery will last. Also, some have added features like a remote control or Bluetooth.
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