Twin City Knitting SPORTS Bike Socks. proDRI - Odor Control - Secure Fit. Comes in 4 sizes! --- Small = Women's 4-7 - Mens 3-6 --- Medium = Women's 7-10 - Mens 6-9 --- Large = Women's 10-13 - Mens 9-12 --- X--Large = Women's 13+ - Mens 12-15 ---