These are the best flip flops I've EVER had!  I wear them all spring, summer and fall (as long as it's not too cold).  Sometimes I'll wear them in cold weather with my toe socks.  They're unbelievably comfortable.  The only problem I have with them is that you're dangerously prone to slipping on certain wet surfaces (granite sidewalks, metal, some smooth sidewalks).  Ordinary sidewalks are not a problem, though.  I avoid wearing them when it rains because there are lots of manhole covers and granite sidewalks in NYC, but in spite of this, I can't recommend them enough.  I don't know what I'm going to do when they finally wear out.  I'm so sad!

EDIT:  They haven't stopped making them, praise Jeebus!  You might have to order them directly from the Crocs web page, but they're still available.