The mavic ergo dial qr gives you a micro adjustable fit at the top of the foot and the two ergo straps make sure its just as precise and comfortable all the way down their signature endofittrade tongue hugs your feet in all the right places for what we call the lsquoglove effectrsquo but itrsquos when you get to the sprint that you see the real power of these shoes the sole is built with our energy carbon composite making sure your power goes into the pedals exactly when you need i