No excuses for not sticking it, the Vibram rubber and great fit of the Italian made La Sportiva Nago will keep your feet on the edge as long as you can hold. Comfortable too, you can wear them all day, or until you solve that boulder problem. Leathersynthetic upper with a perforated lined synthetic leather arch area for moisture management. PN 45 lining in the arch and on the tongue provides comfort and moisture management. Leather heel and toe for great feel and grip. A great fit that delivers performance and comfort. 5mm Vibram XS Grip sticky rubber outsole for grip and durability. Made in Italy.