Salewa Men's Crow GTX Mountaineering Boots Leather and Textile Imported Synthetic sole Shaft measures approximately 5.5" from arch GORE-TEX PERFORMANCE COMFORT LINING: Breathable Gore-Tex liner allows your feet to stay comfortable in changing weather conditions. VIBRAM MULAZ SOLE: A stiff midsole and crampon compatible construction offer optimal traction and surefootedness on mixed terrain. LEATHER UPPER & FULL RUBBER RAND: 1.6mm suede leather with abrasion resistant fabric upper. 360 full rubber rand. ADJUSTABLE FOOTBEDS: MFF+ interchangeable footbeds adjust to the shape of your foot. IDEAL USES: Mountaineering, Alpine Climbing, Alpine Trekking, Glacier Travel. WEIGHT: 23.3oz./660g.