Known for its hiking boots and more recently for its trail and road running shoes, Salomon approaches the winter footwear theme from its own sporty angle. The Toundra Pro CSWP is a lightweight, exceptionally well-fitting option for winter. The high shaft helps keep snow out, a small heel tab facilitates use with snowshoes, and insulating materials help keep your feet warm. So, whether your winter day includes walking in cold conditions, snowshoeing, snowmobiling, or working outdoors, choose the Toundra Pro! The level of insulation is somewhat lighter than in the heaviest boots available, but on the other hand these are made for more mobile use. - The fit at the tip is rounder and more spacious than in most Salomon shoes - Aerotherm Aerogel material, originally designed for NASA, helps make these the warmest winter footwear from the manufacturer. - "CSWP" (ClimaSalomon WaterProof) membrane prevents moisture from enteringthough these are not rubber - boots. - Winter Contagrip sole i