I wear 10.5 4E and loved that the other Fitsok socks had 10.5 on the low end of the XL 10.5-12 size since 4E feet are bigger.
Unsure if I should go for the L or XL with these.
supahYou could go either way. I've been testing the medium and small (normally a medium) and they both fit well. The smalls are more snug but in a way I really like.
Unsure if I should go for the L or XL with these.