The marketing pulled me in. Springs that will improve efficiency, making the run feel easier? Count me in! The wide toe box was an added bonus and I couldn't wait to run in these.<br /><br />Upon first trying them on I could definitely feel those springs. The shoes have a bouncy feel and I thought I'd found a pair of winners. A bit of walking around and a short slow jog and I was completely sold.<br /><br />Unfortunately, once I ran a bit faster everything went to crap. It's funny that many of the reviews here say that the shoes are too narrow; I have the opposite problem. The left one fits more or less perfectly, and the right one is way too wide. Shoddy workmanship, I guess? When I run a bit faster than a jog, I feel like my right foot is slipping and rolling around, even when I really lock down the laces. You might blame my feet or gait for this, except that none of my other five pairs of running shoes exhibit this problem. I've never had anything like it before, and I have to say that it's incredibly unpleasant.<br /><br />Aside from the sliding/rolling issue, the ground feel and transition when attempting higher speeds is just really clunky. I just can't seem to get into a smooth rhythm when I'm wearing these shoes. I feel like I'm constantly fighting the ground and like I have to push a lot HARDER than usual to run fast. It's the exact opposite of what I hoped these shoes would do for me. After a run in these things my ankles burn in ways they never have before.<br /><br />Finally, there's the issue of look and feel; the materials and construction just seem very cheap and plastic-y. These aren't cool looking shoes. I wouldn't care at all about their looks if they were performers, but it's worth mentioning given my other complaints. And based on the feel of the materials I can't imagine them lasting long.<br /><br />All in all, I think if you want something for a comfortable long walk and/or light jogging these might work well for you IF you manage to get a matching pair. (Best of luck. Chinese manufacturing at its best.) If you're doing any kind of speed work, I'd look elsewhere.ching pair. (Best of luck. Chinese manufacturing at its best.) If you're doing any kind of speed work, I'd look elsewhere.