My shoe size is 12D which is right on cusp between a Large and an Extra Large. Your Extra Large is right for me. John
The only socks I wear. If I can get by with wearing them with dress clothes I will. Very comfortable. They dont fall down. The socks stay once you put them in place on your legs.
I did have to sew pom poms on the back heel area to keep them from slipping down while walking. I do a lot of walking. They are a tad thicker than I would like but are soft and cushy.
4270 Diabetic socks are great stay up but do not cut circulation and last great to.
These don't bind as much as other brands (but they still do dig in a bit). I like the reinforced toe and heel.