I bought these to wear at work. I have the Uneek with the open heel also and they are the most comfortable shoe I have ever bought. I can't wear the open heel at work so I bought the Uneek with the closed heel. I absolutely love them and now my feet can breathe at work. They are very comfortable and don't hurt my feet at all. I work on a concrete floor 10hrs a day and have had foot surgery on both feet. These shoes are wonderful. I also have a pair of Keen boots that I wear in the winter. I'm sold on Keen comfort and quality.