This is a very comfortable shoe.  A little like walking on a cloud, I'm not kidding, but still pretty sure-footed.  Over the past few weeks I've had a chance to test them in ice and snow.  They faired well even in places where I'd removed all but that last layer of icey packed snow.  I can wear them all day with no knee problems.  The sizing in nearly perfect, they fit just like my other 9.5s of various brands.  The only reason they didn't make 5 stars, the cut-outs aren't low enough.  They rub on my ankles more than my other tennies.  Still think they're great and don't think you can go wrong with them.  I'm considering getting the white ones, too!