I did a 1h40 ride yesterday in -5C which isn't all that cold. I was hot everywhere except my feet. I was riding my older mountain bike which only had normal (no strap) pedals so I couldn't year my shoes and booties. I wore my regular winter boots (that I have not been cold in walking around down to -20C). But by the time I got home my feet were frozen!
What do you wear on your feet?