I had to purchase 3 pairs to find the right size.  After using the size chart provided I ordered my normal size.  They were too small so I went up a size.  They were also small and I had to go up another size.  My feet have not grown.  The shoes run small.

I ordered the same shoe 3 times because other than size the shoes are very nice.  They are lightweight and provide good support.  I normally do not wear shoes like this.  My physician wanted me to wear shoes with good support due to a chronic medical issue.  These shoes do provide the support my feet need.  They are comfortable!