Love hate, that’s our decades long affair with boot dryers. Too loud, break, can’t operate in vehicle. Pain points never end. I can’t say the Dryguy Travel DX is perfect, but I’m liking the quiet fans that move just enough air, and the minimalist amount of heat designed to help obviate moisture but not overload your vehicle electrical system. Lightweight for your traveling luggage as well. Only complaint so far is we’d prefer a slightly stronger fan. Nothing is perfect.
In any case, the nicely thought out Dry DX power system acquires electrons off a wall-wart at home (both 110v or 240v), or your automobile connector on the road. Caveat, not for use with gloves, probably because limited air circulation burns out the fan or heater. They’re designed to slip down into the toe area of your boots (keep tongue and other obstructions open to enhance circulation). That’s about it.