I normally wear size 6-1/2M. However, I find that every Privo style fits differently. I originally purchased another style in 6-1/2M, but had to return it since it was okay in the length, but seemed too narrow. I wanted to order it in a wide, but it was not available. I ordered this style instead in 6-1/2W and had thoughts of returning it too. The vamp was very snug and felt like a 6-1/2N, but the foot bed was very comfortable. I ended up keeping it and find that the narrowness gives good arch support.