These sandals run wide.  I had a problem with an injury to my foot and it swelled up allot, otherwise I would have bought-en the Narrow,  I am not a Narrow size, I'm a medium.  When my foot heals I will buy another pair in the Narrow size to fit my medium size feet. The Sandals are very adjustable, so don't be too worried if its not exact. These cute design's really make a fashion statement.