Very good application and stable. Very good feeling. A little tighter than I would like. I bought size 45 - 48 (T4) for a foot size of 29 cm and they hug the foot as if it were a smaller size. I imagine they will loosen up with washes. I will also try them on long distances to have a complete picture. So far, I have only tried them for road running. I will see them in the mountains as well.