I love these Pursuit socks. I ordered them for skate skiing. I have been skiing in wool socks for years, but these are the best I’ve skied in. They don’t shift at all (despite the lateral movement in skate skiing) and kept my feet dry, which has never happened. I ordered the Aspire socks too for cycling and warmer ski days. So far they are great too. I love that the seams on these socks don’t annoy me. I’m easily annoyed by seams on my socks. I just ordered some more Aspires at a lower height for running. We’ll see how they are. I will only wear certain socks for running, and I have high hopes for these! I’ll be recommending Swiftwick to all the athletes I know! And sizing was true - I wear women’s 8.5 shoe size, and Medium in these socks fits great.