An all-around lace-up climbing shoe that's specifically designed for both comfort and performance. Ventilated leather upper has a perforated, lined synthetic leather arch area for moisture management. Slip lasted construction. Dry Best fabric lining only on the tongue and arch. 1. 1mm Laspoflex midsole for cushioning. 5mm Vibram XS Grip sticky rubber outsole. 8. 29 oz.