When I bought these I worked 10 Hour days on my feet. I wore these and got blisters on my feet  and it dyed my big toenail black the first time. I gave them a few more chance my toe would always have black marks on it and they ruined several pedicures. I eventually only got blisters in one place on my foot. They also began to stink to high heaven. Ill never buy these again it was a major waste of money as I could have just purchased another pair of Danskos which have never failed me unlike these awful shoes.