Features of the Adidas Men's terrex Free Hiker C.RDY Shoe Stealth rubber Outsole for winter grip combined with a winterspecific lug profile for better grip in icy and Snowy surfaces Torsion bar for midfoot stability and controlled flexing during long hikes Boost Midsole for an extremely comfortable and long lasting cushioning, keeping its unique cushioning properties after 1000+ kilometers in both warm or very cold temperatures EVA stabilization frame for a secure ankle and heel movement while hiking Molded heel cap for additional heel stability and Fit Gore-Tex Duratherm Technology combines a waterproof membrane with a winter-specific insulated lining Primeknit sock combined with stretchy materials providing a snug sock-like Fit Waterproof inner bootie with a water-repellent external gaiter for protection against Snow, rain and cold Welded High abrasion TPU mudguard overlay, for lightweight protection and seamless comfort