La Sportiva Men's Katana Leather Imported Synthetic sole Highly adjustable opposing hook and loop closure for a precise fit Lorica toe box for optimum edging power Slingshot rand connected to the power hinge under the arch to control stretch Ideal for overhanging sport routes, bouldering, gym climbing and technical face climbing Vibram XS Edge compound - This rubber compound is exceptionally resistant to deformation on razor sharp edges and it will not creep when smearing