Seem to Run a Little Big
According to the size chart, I should take a medium (I wear an 8 shoe), but it was WAY too big. I had to return the medium and get a small. The small fits great on my bare legs, hiking pants, and insulated snow pants. I think I have an average size calf. I like that the instep strap has a buckle (rather than a string you tie) so it's easy to adjust them to use with different shoes. I've only used these a few times so far, but am happy with them and would buy them again.