The ultimate technical big wall free climbing shoe developed in collaboration with Tommy Caldwell. It is designed to provide powerful, technical edging and crack climbing prowess without compromising either. This mid-height edging machine will take you out of a thin crack and out on to the diciest dime edges you can find. Thin padding in the ankle and above the toes protects you in the cracks, and the patented P3® platform delivers sensitive yet powerful edging abilities. The toes-flat fit is perfect for comfortable crack climbing, and the ventilated tongue and lateral rand perforations promote air flow. Soles are Vibram's new rubber compound — XS Edge — that holds an edge better on sharp micro edges.