These shoes are not sized as advertised. Buyer beware. I ordered a size 10m and they fit close to 2 sizes smaller; I was unable to break them in or wear them. The material had no give so the sandal itself was very rigid. Be careful to buy the correct sandal brand and avoid knockoffs such as this one. If you do choose to purchase this, make sure to size up the shoe 1-2 sizes from what you would normally wear.