Ok, so I got these to shape up.  I don't know if they are doing that since I also have been working out more, but I figure it doesn't hurt to have added insurance.  They feel great, cushy, great arch support.  I will say that you should get used to them, and be aware of your steps.  They do tend to roll inward, which, as long as your mindful of that fact, you should be ok.  If you are not a graceful person, well maybe you should skip these.  I got them at a great price, no complaints yet.  Had them for a few months now.