Preparing for your next adventure into the icy unknown We're bringing the Mont Blanc Pro GTX Men's Mountaineering Boots from Scarpa. It all starts with a 3mm Perwanger leather upper with GORE-TEX Insulated Comfort for waterproof performance. , breathable protection as well as heat insulation. Featuring welts on the toe and heel Mont Blanc Pro is compatible with almost all cat systems which are not designed for a specific pair of boots.