I was careful to read lots of reviews, looking for shoes that were size medium, but fit on the narrow side.  This was one of them, so I ordered the M and wouldn't you know it, they sent me the wide!  I also ordered this style in pink in a medium and in expresso in a medium and they also sent me wides.  That was so frustrating.  Nevertheless, these are wearable so I will keep all 3.  Which makes me realize that if you are a true wide foot, then the wide in this style won't work for you.  I say that only because I have a foot that is a little less than medium width.  (I am thinking to use one of these shoes as my house slipper - for the summer w/out socks, then for the winter with socks).