I bought 2 pairs of these shoes. The back of the shoe folds incredibly easily. Once this happens, some of the padding material will press against the back of your heal. I thought that the first pair of shoes could be an anomaly, but this is already happening with the second pair, although I was more careful when putting them on. This is not the quality I would expect for the price of this shoe. Once the material is complicated, it is difficult to repair. This is a fatal flaw that makes every other positive aspect of the shoe impossible.