I'm usually a 6.5 to 7 in shoes.  I purchased this in a size 6.  The 6 fit perfectly, although the back of my foot is touching the very back of the shoe.  The 7 was too wide up in front.  I have medium width feet.  I wasted my money on these shoes because it fits too much like a glove.  No stretch.  I can wear for short periods if I'm sitting alot.  Only buy if your feet is a little wider.