Originally Posted by bigairman
I was thinking about buying the Hotronic Power Plus 3.5 Custom heaters. I have Lange 120 boots with custom insoles. How well do these things work? Do the wires interfere with the boot liners in any way?
I've installed dozens of them, they come 2 ways, as a complete footbed to replace the stock footbed, or just the element to be glued to your orthotic, get the one made for orthotics. The wires run under the footbed, out a small slit at your heel pocket, and up the outside of your liner, if done right you don't even know it's there. They work well but one trick is to turn it on before you leave the lodge, they're made to maintain warmth, not heat up a cold foot.