To add on to our previous question, let's take a look at what some of these letters mean in terms of size.
For women, the sizes A, B, and D stand for different widths of your foot and will help you find the right width shoe for yourself:
A: is for narrow
B: standard
D: wide
For men, the sizes B/N/C, D/M/R, and 2E/E/W also stand for the different widths of your foot and help you find the right width shoe.
B/N/C: narrow
D/M/R: medium or standard
2E/E/W: wide