These aren&';t your mom&';s climbing boots! The Asolo Alta Via GV alpine mountaineering boot has a crazy-good hinge system in the cuff area, whereby, you can fully flex your ankle forward on steep approach slopes. Yet, the upper heel area also has a bellows for flexing the other way, when walking downhill. A very sophisticated and multi-material heel and sole construction keep the boot stiff (and your heel in the pocket) for edging and front-pointing. And, don&';t even get us started on how great the waterproof leather upper works... One-piece water-resistant 2,4 mm Perwanger leather upper Gore-Tex lining insulated, waterproof and breathable Total traction sole with rigid Pebax frame for support and torsional stability The Asolo/Vibram sole is compatible both with most common crampon Asolo Women&';s Size Chart