Anybody used a chemical heater to keep their heels warm?
I've had good luck w/ them for the front part of feet.
If I wear thick booties, have had too much sweat -->freeze.
Am thinking of trying chemical heaters outside the shoe between the bottom of the shoe and the bootie. This would heat and insulate. The cold temps are conducted right through the hard bottom of my road shoes.
Do Mtn bike shoes have a better insulated sole?