text: The uppers of these shoes are far too rigid.  I put around 50 miles into the shoes and it has been causing pain in my left heel since day one.  I am sure that there is some defect in my gait that is a contributing factor, but this is the only pair of shoes I have ever worn that has caused this issue.  I bought these based on the glowing reviews from other long distance runners, but there were not right for me