I worried about the size because I usually take an 8.5W. This moc doesn't come in a W, apparently.  However, I followed the advice of another reviewer who wears the same size I do.  She wrote that the 8.5B, or even the 8B, would fit fine, as the mocs "give" and run a little large anyway. She was right.  I'm very pleased with the fit.  Also, these are pretty and comfortable shoes.