My wife has had a diskectomy so any serious movements (like those in Zumba) tend to aggravate her back pain.  After a few months of classes my wife was ready to start toning down the intensity of her Zumba workout but then she decided to try a pair of these shoes to see if it made any difference.

The fit of these shoes is very comfortable with good arch support.  The sole is well cushioned and the uppers are firm and provides a nice amount of grip for your feet.  The shoes don't skid at all so they are perfect for Zumba movements.  Overall the cushioning and support is excellent.  My wife did not have any pain in her back or her feet after a heavy Zumba workout so these shoes definitely  made a difference for her.

The only real downside is that these shoes are extremely bright.  The bright yellow color is intense and some may find it to be too "loud" for general use.  I will say that several people commented that they loved the look of these shoes and they wanted to know where they can purchase a pair so it is really just a matter of personal taste.  Also worth noting is that some of the other available colors seem a bit more subdued for those who don't  like the fluorescent color.  The price is a bit high but these are definitely worth it if you need good support and cushioning for your workout.