When I was in Spain a few years ago, I was introduced to "real" espadrilles, and now I buy them every summer. This is one of them.  These run a little small -- I had to go up a half size, and the silk doesn't stretch out like the traditional cotton does.  (on the other side, the silk is a somewhat dressier shoe).  I can wear a good espadrille all day and still be comfortable, and these fit the bill.