Salewa Men's ALP Trainer Mid GTX Boots Leather and synthetic Imported Vibram sole Shaft measures approximately 6" from arch GORE-TEX EXTENDED COMFORT LINING: Breathable Gore-Tex liner allows your feet to stay comfortable in changing weather conditions. VIBRAM HIKE APPROACH SOLE: Vibram Hike Approach sole works well in a wide spectrum of mountain terrains. CLIMBING LACING: Climbing lacing extends right to the toe for accurate adjustment. 3F SYSTEM & ADJUSTABLE FOOTBEDS: The trademark SALEWA 3F System connects the instep area of the shoe with the sole and heel. MFF+ interchangeable footbeds adjust to the shape of your foot. IDEAL USES: Hiking, Trekking, Alpine Trekking, Scrambles. WEIGHT: 19.4oz./550g.