My shoe-size is 8 and I ordered the same for this product. Length wise it's pretty ok but I had a problem getting my feet inside the shoe for the first few times. It is narrow and a bit tight around the ankles. If you have broad feet, you might want to consider ordering an extra size. However, I have used it for a week now and it's more comfortable than the first trial. I guess it expands and fits in with the feet appropriately with time.