I bought my first pair of these sneakers early last spring.  First, I simply used them for tooling around town (look great on feet), then for my speed walking, then, even for zumba.  You could say I wore them out as the ball treads are getting smooth and the seams are a bit worn.  These showed up on Amazon on sale just at the right time.  I grabbed them as Reebok discontinued the slimtone line, replacing them with a new version.  I just might grab another pair to put away for the future!