A women specific last gives the Lowa Women's Weisshorn GTX Mountaineering Boot a dialed fit that adventurous women out on technical, mixed alpine routes need. Gore Tex waterproofing and Duratherm insulation work together to keep your foot warm and dry while the fleece lined, aluminum coated Insulate Pro insole provides extra warmth. The Flexfit Synchro support ensures an easy ankle flex for a comfortably natural stride on steep terrain, and the I Core midsole includes a shock absorbing PU wedge, a nylon shank for torsional rigidity, a carbon inlay for flexible stability, and a TPU chassis that enhances rigidity for automatic crampon capability. The Vibram Dolent sole features an alpine tread design that gives the Weisshorn high edging stability for precise footing, and a self cleaning profile prevents debris build up between the rubber lugs. This boot also features an X lacing system that complements the removable inner tongue for a completely customizable fit, and the I Lock clamp hooks ensure a quick and easy lace up. Lowa built the upper out of split leather and Cordura for longevity, and microfiber for your comfort.