Heated Insoles on ebay.
 

Clicky Thing

These look cool. I might get some. What do ya think?

yeah but no but...
 

I first thought batteries wouldn't have enough charge to provide much heat for long, but then again, at least you won't have cables running up to the bike's wiring. Is anyone gonna be the guinea pig for these?
Jon.

he reckons that a pair of 2300 mAh batteries will last 5 hrs in the heated insoles. I use them in my digital camera and they do last ages. I reckon they'd work fine with a decent set of rechargeables - but would end up costing a fortune with Duracells.

Two things to consider:

Are your boots 100% waterproof and if not, are these devices?

Don't forget to take them out of your shoes before walking through customs. :lol: