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. It?s a perfect shoe for mountain bikers and cyclocross racers alike. Ultra breathable seamless upper Full length tapered carbon plate Rubber tipped TPU lugs P.R.O. Buckle System Includes 1:1 Insole System Weight: 340g (size 43)