Boreal built the Big Wall Climbing Shoe to withstand the rigors of multi-pitch climbing in Yosemite and stay comfortable on aid routes in Zion. Mixing the comfortable support of a mountaineering boot with the performance of a standard climbing shoe, the Big Wall Climbing Shoe climbs all the cracks and moves up step ladders without a problem. Its split leather upper has a waterproof treatment and Armortex NT reinforcements for long-lasting durability. Boreal padded the inside with breathable Air Net for multi-day comfort. The PXF midsole keeps the shoe as still as a boot, and the FS-Quattro rubber sole lets you climb crack, slab, and face when you don't want to aid.