Extremely comfortable, great-fitting, stiff, well-ventilated and lightweight. What more could you want in these race-ready road shoes? Pro-level features like the Energy Full Carbon outsole, Ergo Fit 2D molded insole and Energy Lock heel counter deliver sprint-winning energy transfer and guarantee all-day comfort. Clima Vent Tongue with 3D EVA insert manages moisture and is ergonomically shaped for the best fit. Ergo Lite Ratchet with fully-adjustable Custom Ergo Straps for enhanced security and power transmission.