Most high end mountain bike shoes sacrifice traction and walk ability in order to provide maximum power transfer to the pedals. Not content with making this sacrifice in walk and hike ability, the Pearl Izumi X Project 2. 0 Shoes deliver the powerful energy transfer of a fully rigid carbon fiber soled shoe, without reducing its ability to grip over rough terrain and flex in the right places when you're walking over impassable trail obstacles. What's the X Project 2. 0's secret to delivering powerful energy transfer without sacrificing traction or flex over hike a bike sections' Pearl outfitted this shoe with a full length carbon fiber sole plate that's tapered to provide just enough flex when you're walking and hiking over trail obstacles and loose dirt surfaces. Run shoe EVA foam placed under the heel dissipates impact and alleviates discomfort when you're hiking over craggy, rock strewn trails. Co molded rubber tips placed over hollow TPU lugs provide tenacious grip for a cycling shoe, that is without adding excess bulk or unnecessary weight. And since there's a full length carbon plate, you'll still enjoy the excellent power transfer needed for rapid acceleration and quick uphill bursts. The shoe's upper consists of a fully bonded synthetic material that forgoes seams along the toe box to eliminate hotspots and nasty pressure points. Strategically placed mesh vents promote breathability during warmer weather for enhanced comfort. Additionally, you'll appreciate the bi directional closure, with micro adjustable Boa reel for a dialed fit that evenly distributes pressure to alleviate uncomfortable bunching and pressure points.