I have a narrow feet (about a man's B or C width, size 11) and I ordered the 10.5-11.5 Narrow size. They fit very well.My wife is from Japan, and we don't wear shoes in the house and I leave one pair of sandals in the front entrance of our home and another outside the back door and use them when I need to spend a few minutes outside and don't want to put my regular shoes on. It's a habit I picked up while living in Japan.If my previous experience with Okabashi sandals holds true, these should last about five years of this type of use, perhaps longer, since my previous ones are the ones that have two narrow straps connecting to the soles that eventually break, while this type has a single long connection.
Rating: [5 of 5 Stars!]