There's never been a shoe built for long trail races like this before. Atop your foot, a Kevlar reinforced MATRYX upper with welded overlays to help the foot breathe while protecting against errant sticks, branches and the like. Under the foot sits a crazy amount of lightweight HOKA cushioning to support the body through miles on end. Underneath that, multi-directional 5 mm Vibram Megagrip outsole ready to take on any terrain in any weather at any time. Impressed? Try it on, and it gets better.