I love these shoes! I'm on my feet all day, on a concrete floor, and lots of walking around and standing. I have NO idea if these do anything to shape or tone by thighs or butt, but the soles are so thick and padded, it gives me lots of "cush" and support. At first, I was disappointed that the only sizes offered were 10 and 11. I'm usually more of a 10.5, but the 11 is nice. So if you don't see your size, try the half size up.