UPDATED: TO POOR MUMS:

http://winterboots.com/extreme-cold-boots-148-f-to-20-f/

SOME OF THESE BOOTS ARE RATED TO -148 FARENHEIT.

http://winterboots.com/baffin-derrick-mens-composite-toe-extreme-cold-work-boots.html

HERE'S A GOOD, COLD WEATHER ONE WITH REFLECTIVE STRIPES, AND ELECTRIC SHOCK RESISTANCE.