LikeSleep,
I bought these Extra Large socks for my shoe size 14 feet and the socks were too small. They were too short and too tight. In addition, they are made of nearly all polyester, so they are thin and cheap feeling. I also bought the Medipeds NanoGlide socks in Extra Large and they fit me very well. The Nanoglide socks were larger, even though the brand is the same, and I like them much better.