I love Frye boots and have several pair; they are sized weird though. I have found that I do best if I just go ahead and order my normal heel to toe measured size and then sorta just "break 'em in"; they do best for me that way and don't slip up and down when broken in. These double zippered boots, though, are very easy to get on and I do have two pair of them, one is a size 91/2 B ( it was all they had left near my size and I had to have that color or die); the other is a 9 and I quite truthfully cannot tell the difference. They are beautiful boots and I am happy I bought them.