Salewa Men's Alp Flow Mid GTX Alpine Trekking Boots Leather Imported Synthetic sole Shaft measures approximately ankle-high from arch 3f power unbeatable combination of flexibility ankle support and precision in fit improved with a steel wire for additional heel containment anatomically positionedThe advanced climbing lacing reaches right down to the toe to guarantee precision when climbing and to enhance forefoot fit Hike approach sole by vibram provides grip flexibility and durability to tackle the most demanding excursions in total safety Laminated gore tex lining