Been wearing these for years.  They're uglier than Crocks (I take offense at people asking...&#34; are those Crocks&#34;?  F#@K NO!  What do you take me for?) which ups their appeal, and they're incredibly comfortable and kind of form to your foot, rather than sloshing around on them as per Crocks (though I've never worn them but have seen them hanging loosely on people's feet like a falling diaper).  I was quite surprised at how easy they were for every day wear in all conditions.  Surprisingly they don't stink nor do my feet sweat while wearing them.  Hard to find at times, and the Japanese love these things, though I'm not Japanese nor have any affiliation with nor have I been paid for any type of endorsement; to either.