I wear a size 11. I know shoe sizes are merely suggestions but the Yann runs really small. I bought an 11 and my toes were crushed. I then bought an 11.5 and they were still touching. I have never bought a size 12 shoe in my life.
The shoe itself looks really nice. But after returning 2 pairs, I'm just not feeling it.
Longs for the days of sharing sweaty sock residue with strangers at a real shoe store...