Take your outdoor adventures to the next level of extreme with the Lowa® Hunter GTX Evo Extreme boot!Smooth and durable nubuck upper materials. High-top silhouette offers maximum durability and protection from the elements. Perforations in the boot's lining allows air to enter, pumping heat and moisture back out.Patented, seamless, waterproof GORE-TEX® lining with Primaloft® insulation for added warmth.Lace-up closure with X-lacing system and patent pending tongue stud allows for better pressure distribution.C4 tongue is anatomically contoured to cradle the foot. Balance footbed with breathable top layer and slow reacting foam provides fit customization, transports moisture away from the foot, minimizes friction, and reduces fatigue. PU midsole with SPS Cushion is designed to help control over-pronation and supination, reducing fatigue and potential injury when covering long distances.VIBRAM® Masai outsole for excellent traction and added durability. 5mm nylon, full length and width stabilizer, with a PU layer for total underfoot support. High wall rubber rand. Strap-on crampon compatible.