I went to a running shoe store and they fit me into these. When those wore out I bought these from Amazon.  However I have learnt that these do not have enough cushioning.  I have had to buy sole inserts costing more than the shoes.  The material on top of the shoe is not strong enough to keep the foot in place while running.

Even running on grass hurts my feet.  Now that they are new I am stuck to these for a few months.