This rock is simply indestructible. Basaltic Andesite (cinder) doesn't break down. It doesn't erode or crumble. It just gets sharper, rougher, more vicious with age. So when ACG designed this approach shoe, we made sure it had the most durable high-tack rubber soles available (Vibram). The result is the ideal solution for technical approaches and rock-based environments and a perennial favorite of Exum Mountain Guides.
This shoe is hard to find. The only place that could possibly have them is Teton Mountaineering in Jackson, Wyoming. 1-800-850-3595