First I want to say that I love these boots, they were comfortable right out of the box and fit my feet perfectly (12.5 - 2E).  They feel great after 14 hour days, 5 days a week, on my feet. However, within a week of wearing the piece of rubber on the back, where the heel bends, separated from the shoe.  I saw someone else post a pic of the same thing so I wont.  my only problem is they are required for work so I cant return them and wait for a replacement pair.  So I just have to deal with it for now, really annoying.