Good value; lives up to the advertising. An improvement in the line would be the addition of a size between Medium and Large for women. There is too much of a jump in size for women.
I wear shoes women's size 7 1/2 or 8 and have narrow feet and slender calves. the medium fits me well so I think it would be snug for a size 9. I turned the cuff down a bit to avoid impressions. these socks are very soft, warm but not overmuch; you cannot even notice the seams around your foot; very well designed. Note that the indigo really is a purple background color, not like what looks like medium blue in the online image.