I just got in some birkenstock professional bostons. The non-slip sole is quite slippery on a variety of surfaces, I nearly fell down some stairs at work yesterday. I was coming from Crocs and I'm having to re-learn how to move around the kitchen in the birkenstocks. That gripe aside, they look and feel great. I did not get the wides but they still fit quite wide. Just thought I'd post this since not much has been said on the birkenstock professional line.