I was very unhappy with this purchase.  I have been wearing this sneaker for years, and always the same or very similar model, always the same size.  These sneakers were terrible.  I wore them for 20 minutes on an indoor treadmill and started having extreme pain in my feet.  I stayed with it for another 20 minutes and gave up, as I had completely lost feeling in one foot and partial feeling in another.  When I took off the sneakers, my feet were discolored.  I was not able to wear shoes for the rest of the day.  I believe that these sneakers were either Fake Addias or, the very least, the size was not properly marked.  I wish I could return them but they came with no paperwork.  Nor were they wrapped; just lose in the box.