This is my second pair of Keen flip flops. I wore my first pair for 5+ years and finally decided to treat myself to a new pair. I'm so glad I did. They are very comfortable, offer a good arch support unlike most other flip flops, and the rice bag style is really cute. I receive frequent compliments on them.
I have very narrow feet but these fit snugly enough that I've never had them fall off my feet. There was a short break in period (a day or two) before they felt as comfy as my old pair. I wear them every day, have walked long distances in them without any trouble, and my feet are never sore or tired at the end of the day.