I wore these for four very painful hours at work. Finally had to change back into my old boots. Did not know till I got home and took off my socks that both feet had damage. There is no return for these because I wore them. All I wanted was to find a comfortable pair and picked on these because of the brand name. I was wrong. Have been told that they require "break in" time but that the top material is too hard to actually break in but it is the bottom that does break in. Too late for one toe nail that looks like it will come off now on one foot and a great big blister on the other foot. So be warned and learn from my painfull experience.