I thought “fitted socks” just meant socks that are shaped to be snug on the foot, as opposed to something like tube socks....does it mean something else?
You are exactly right tortoise. Fitted socks are the exact sock for your foot size, harder to find now, but if your shoe size is an eight, then a size 7 or 8 sock is appropriate. They do not twist like a tube sock or other slippery materials that they make them from these days.