They arrived, and they fit!

They're so purple!  They will also be easy to clean.  And you can really feel the ice under your feet well, and that helps keep a good footing, despite having a nice tread. They worked better than my athletic shoes, which I left at work.  I wouldn't want to stand for hours in them, but since I bring my Birkenstocks with me when I'm going to be somewhere for hours inside, that's no problem. :)