I have been wearing these sandals for a couple of weeks and I am very happy with them.  The one thing I had to get used to is the arch support.  Previous brands of sandals were pretty much flat, so it took a couple of days to get used to this.  The curve of the arch support also helps to keep these sandals from slipping off one's feet.  Another advantage of these sandals is because there is no leather in the product, they are easy to wash clean with water when needed.  Overall, an excellent product.