I have been thinking about electrical heat inside of my riding boots. In the past I have tried over boots, heaver socks, and even plastic bags over boots or just over socks All seem to work, to some degree, but it's hard to visualize them being better ( or easier) to use, than the electrics. and my perceived needs are to just ward off the creeping feeling of chill, rather than trying to apply enough heat to cook a roast. after doing a bit of research it looks like good quality electric socks are pretty darn expensive, compared to boot soles. this probably is because socks probably die an early death because of the stresses that they go thru being put on and pulled off. so my question is for those who use the soles , do they do much for the whole foot or just the boots soles?.....will probably control 'em with a cheap ebay PWM, mounted on the bike