I normally wear a size 5 but this shoe was only available in 5.5.  I ordered it anyway thinking that I would just have to wear a thicker sock.  The shoe actually fits like a size 5 so it runs small.  I actually have 5  pairs of this style (in size 5) in different colors so it is obvious that I really like the style.  This one pair was the only one that ran small for its size.  The design of the shoe is very comfortable and I have always been able to comfortably wear them all day and into the evening - it is nice to loosen the strap if your feet start to swell after a long day.  Perhaps the strap could be a little longer so that less of the velcro hooks showed. Overall construction is good.