When we're gearing up for the next adventure into the frozen unknown, we take along the Men's Mont Blanc Pro GTX Mountaineering Boot from Scarpa. It starts with 3mm Perwanger leather upper with GORE-TEX Insulated Comfort for waterproof, breathable protection as well as insulated warmth. Because of the toe and heel welts, the Mont Blanc Pros are compatible with virtually every crampon system that isn't custom-made for a particular pair of boots.