I was a little hesitant to purchase this shoe because the design was new to me, however I'm really glad I did. I am currently on my 10th pair of Newton's I think. Living in Ottawa Canada winter running can be challengening at best, but these shoes have been great. I am a huge Newton fan for the reason I have had back issues for years, and the design of the Newton has me landing on my forefoot and not my heel. You cannot believe how this type of shoe has changed my enjoyment of running. And they are wicked fast too.