I wanted to try the "toning" shoes that everyone has been coming out with and I was drawn to the Reebok line because they still look like regular shoes. I ordered these and recieved them pretty quickly, also ordered a pair for my fiance (who has knee problems)thinking that they help him strengthen his knees without straining them. They worked out great for us! Within the first 3 days straight of wearing them the backs of my legs had just enough of an ache to feel like i was accomplishing something. I ordered the all black pair so that they would be easier to pass off at work, and i wear them everyday. His knees feel much better after walking in these than other shoes he'd been wearing. Even three of my friends ordered these after seeing/ trying mine. I had read that walking in these felt like you were walking on beach sand, and i have to say that i feel that was a very accurate description and you get used to it very quickly. But word to the wise, running in these is a much bigger workout than you would think!