If you have a hankering to cross the ice cap, or just want a really warm, protective boot with great traction for snowmobiling, taking the early chair to operate e a ski lift, or chop another load of frozen firewood, the Toundra Pro CSWP is a great choice. NASA technology for temperatures that are out of this world, Aerogels, makes the Toundra Salomon's warmest boot (-40F degrees / -40C degrees). Full ClimaSalomon waterproof bootie guarantees that moisture will not penetrate the boot. Trudge through snow and ice with more confidence than Sno-Cat. The aggressive treads on this winter Contagrip sole offer outstanding traction on ice and snow. Extreme cold is no problem for this high-tech winter work boot featuring NASA approved Aspen Aerogels insulation technology and providing superior warmth and fit. Details: Non-marking winter Contagrip outsole, molded EVA midsole, die cut EVA sockliner, ClimaSalomon waterproof membrane, Aerogels insulation, faux fur lining, protective rubber heel cap, protective rubber toe cap, external heel counter, gusseted tongue. Material: Leather, Rubber, Faux Fur, Man Made.