My foot is slightly narrow, skinny and 10 1/4" long. I ordered these in a 10 N. A 10 fits me in most brands. In sandals, I usually need a narrow. My Euro size is a 41 and that is even more consistently a good fit. However, this shoe is stamped as a US size 10 and a *Euro size 42*. I've tried on the Naturalizer "Paco" and it fits perfectly, but this one was too long.

Other than that, this sandal is very nice if a bit granola. It is not as cushy in the footbed as it appears it would be (but that means it's also lightweight) and I can't feel any arch support, which is pretty typical (seems shoe companies have to cater to the flat-footed) but compared to most sandals out there, the entire shoe is quite luxurious feeling, right out of the box. Nothing is rough or feels like it will need breaking in. I will definitely be buying more from Naturalizer in the future. It is hard to find narrow sandals and I'm really pleased with the variety of styles they have to offer.