Salewa Men's MS Raven Combi GTX M Mountaineering Boot 100% Full Rubber Rand/Polyurethane Coated Leather/Highly Wear Resistant Fabric Imported Vibram sole 3S combi triple density micro porous rubber midsole for ultimate edging performance on rocks TPU insert at heel for perfect compatibility with semi automatic crampons Multiple lasts means differentiated fit only when the foot has the space necessary is it possible to eliminate foot rubbing no rubbing no blisters 3F power unbeatable combination of flexibility ankle support and precision in fit improved with a steel wire for additional heel containment anatomically positioned 3D Lacing system with three automatic locking points with a patented set at forefoot to ensure maximum customization in fit Vibram Teton outsole