purchased these because i have weird shaped flat feet. every single athletic shoe that i have ever worn has bothered my feet in one way or another. i envied those that could work out with no pain in their feet. this was my last resort before giving up going to my oh so favorite zumba classes. sincei purchased them 6 hours ago, i have not taken them off. that's a first because usually i want to kicck off my shoes immediately after working out or walking around. i'm sure the vibrams are way more flexible but as my first pair of toe shoes...they are awesome. cannot wait until zumba tonight to see if i will stay pain free in my feet