I normally wear a size 10 but a lot of reviews said to order half a size up so I ordered a 10  1/2 M. The shoes were completely clunky and really big. I found it hard to believe that only half a size caused these to be extremely large on my Fred Flintstone feet.  I have suffered with plantars fasciitis in the past so I'm always looking for shoes that will prevent it from recurring. I injured a ligament on the side of my right foot that wraps around the back of my heel so I bought the shoes hoping it would relieve the pain of walking. Not only did it NOT relieve the pain it made it so much worse where I could barely walk.  I tried the shoes a few times and every time was the same result, my right injured foot was swollen and throbbing with pain.  Other shoes I wear do not make that foot hurt, even flip flops, so I believe it was a combination of a bad fitting shoe and not enough support.  I really wanted to like these shoes too.  Bummer!