Northwave Rebel 3 MTB Shoes Dark Grey 43Carbon XC 12 Sole with full carbon insert in the pedal area and a stiffness index of 12. 0 TPU inserts in strategic points ensure high traction and outstanding wear resistance The BioMap unibody construction upper has a more anatomical, wraparound design that minimizes energy loss to the pedals TPU thermowelded reinforcements for added protection Double SLW3 dial, step by step and full release in a single button Performance Regular footbed provides