These are the older design. They fit "thick boned" people like myself well. I wear Men 8 regular width shoes. Before I trained wearing minimalist shoes, I had to wear 8 1/2 EE or 4E. Anyways, these socks fit well, no blisters, and comfortable.
Always loved these socks. But in the past I got mediums because that's more or less what my size fit. They were very good socks but still had a slight blister problem. However, I am extremely prone to blisters on my left foot (just below big toe (bunion area). This time I ordered small, knowing that they may be real snug. No, they are snug but not a determent. They are snug enough so the material doesn't slide or bunch at all. Ha, fit like a good glove or in this case a good sock should. Oh, I got Stride qtr sock, Ultra thin, Coolmesh II
The tab is too small and the dock slips down I. The shoe. I would not buy again
Great for running! And for sitting in living room!