X-PROJECT™ line features a uniquely constructed sole that is flexible in the right places for hiking or running, but as efficient as a fully rigid carbon bottom. A patent-pending carbon plate provides optimal power transfer for the best of both worlds. The X-Project 1.0 comes with the 1:1 Insole System which can be custom tuned to your specific fit requirements. It's a perfect shoe for mountain bikers and cyclocross racers alike.