I don't know maybe I just have a bad pair, my left boot fits and feels good but my right boot feels like I have a hard seam or support bar under my second and third toes on the first toe. It feels slightly raised there, and when walking, it sometimes seems that all the weight is shifted there, and walking on it is incredibly painful. I hope this goes away once the shoe breaks in, but none of my other Vibrams have felt like this.