Nylon panels join suede on the upper of the Kamik Fargo 2 Boot, and synthetic rubber shells below them keep slush, salt, and snow out. HEAT-MX insulation inside this winter boot retains heat without adding bulk. What Our Gearhead(R) Experts Are Saying:"On icy pavement and slushy curbs, the rubber outsole gripped where I needed it, and my feet stayed warm in the cold. The walk to the bus stop felt steady the whole way."