Takes a little bit to get used to them, but once you get the hang of wearing them, they can be helpful in classes like Body Jam which has spinning moves. Just be sure when to ease up on some moves because these shoes don't have much traction like a running or walking shoe. But the spinning moves you can do way easier in these shoes and takes pressure off your calves just enough for you to get through your work out. I'm 5'4'' and about 280 lbs....and these worked for me. It's not just for skinny girls in case you heavier ladies are wondering if it's just for those cookie cutter athletes you see working out in a gym with nothing but short shorts and a sports bra that never sweat. I did follow another person's review about going up half a size because the shoes don't run wide, they run a bit narrow. I went up a whole size because my feet are large. They look narrow until I stand up on them and they get wide. Plus, I'm flat footed. Matter of fact, I wore them to my first day of work today in an office, full time shift. They felt fine to me.