You can use a shoe size conversion chart to determine the US equivalent of a European shoe size. For example, a women's size 39 shoe in Europe is usually a US size 8.5. These are not real. lol. But they are nice to go outside. They fit on narrow ladies feet. Only narrow feet or will not fit. I tried to sale them but the person tried them on and said they were too narrow. I had the matching purse to go with the heels. The person still wanted to buy the purse without the shoes. So I sold it. Last pair of these.