Handcrafted in Germany. Big wall and north face climbing boot with integrated gaitor. Exceptional warmth, support and durability for climbing in the 4000 meter zone. High wall rubber rand. Step-in crampon compatible. Unisex sizing. UPPER: Cordura® LINING: Insulated with GORE-TEX® Duratherm. MIDSOLE: PU Expert. OUTSOLE: Vibram® Mulaz, with full-length TPU stabilizing plate for rigidity to secure crampons. FOOTBED: Insulate Pro alu-coated with fleece. SHANK: 6mm nylon/8mm TPU for total support underfoot.