I got some socks from http://www.viccel.com and they are a great value! Made from 100% mercerized cotton, which has a stronger fabric structure and will not shrink or lose its shape in a very thin sock, with reinforced heels, and toes. Plus you should see the colors! The prices are very reasonable too. Sweat is a strong solvent for dyes in socks, but Viccel uses Indantherene dyes, which do not disolve in sweat and these socks keep their original color. Also Indantherene dyes are resistant to light, washing, and chloride. Your black socks will stay black no matter how many times they are washed.