I recently started taking Zumba excercise classes after way too many years away from any fitness class.  I started in running shoes that I had on hand and had used for excercise walking outdoors.  I quickly learned that these were not the shoes to use in a workout/dance class.  Too sticky and not agile enough with the wide stabilizing sole.  I relied completely on reviews, since I wanted to get them quickly and didn't want to take the time to drive to a store and try them on.  I'm not sure how far I'd have had to go to find these specialized shoes anyway.  But, luckily reviews abound for shoes to use for Zumba class!  These are very nice for class.  Much better than the running shoes were.  They're flexible and not as sticky allowing for quicker moves.  The fit for me was pretty much dead on.  I ordered what I mostly wear in street shoes, a size 7, and it fits fine.  I do find that it's a little bit wide through the ball of the foot, which does allow me to slip just a bit inside the shoe.  It's just enough slip to be a little friction-y, but not to the point of blistering or being sore.  I think the price on these was very fair.  I got the white ones, which I like a lot, but the difference in price between the colored ones and the white ones...?