Not sure yet, they are a requested Christmas gift
I have many many pairs of wright socks. All are size medium and a perfect fit. This style - the stride tab sock - is smaller than all the other styles and they slip off my heel and into my shoe. Overall I love Wright Socks just not this style in my normal size.
The socks were not exactly what I wanted they were thicker than I taught...
Every marathon I have run I have worn Wright socks. I love them. Now my wife is getting into them.