I wear size 10.5 running shoes and size 10 dress shoes so I decided to order these 10. There is still a few centimeters of space in the sock. I would recommend taking the shoes to your size and ordering 1-1.5 sizes smaller. In addition, the shoes are very stylish. However, it is quite thin and there are perforations in the material; Therefore, contrasting socks show through the shoes easily. However, they are quite comfortable and feel great on a sunny day.