CVS Health Black Unisex Firm Compression Socks Over-the-Calf Length--Size S/M.  It says Men's shoe size 6-8, women's shoe size 4-10.  I am a woman and I wear a size 10 shoe, I could not get one past my ankle.  They are very strong 20-30 mmHg.  I have 3 pairs if someone is interested in all of them, please contact me for bundle and shipping pricing.