Recommended for: climbing 6000m peaks and extreme cold weather climbing. We collaborated with renowned mountaineer Ralf Dujmovits to develop the Expedition 6000 Evo RD, designed for 6,000 meter peak expeditions. It&&';;s loaded with technical features to keep your feet protected, warm, dry and comfortable at high altitude, including an insulated double boot with reflective-coated technologies to retain valuable body heat. The high outside TIZIP closure on the ceramic-coated fabric gaiter provides essential waterproof protection and durability, and the high wall rubber rand protects against abrasion. Automatic crampon compatible.