I use these socks only for several years usually alternates with normal running socks other manufacturers. For all long runs (> 20 km) there is something for me, however, nothing more than these socks. They are very flexible and quite tightly (like compression socks), so I thought the first time they were too small. When you get used to it once you realize the benefit of this section: No seams, no pleats just a perfect fit. In addition, keeping feet dry immmer, no matter how much you sweat. I had these socks never bubbles - even on extremely long journeys, both in competition and in training. Therefore strong buy recommendation!
