I bought this shoe twice in two different colors because a couple of times they were heavily discounted. Both pairs had something wrong with the sole after about a month of accidental wear. I don't know how to describe it, but it's like old Nike Air shoes when the air bubble bursts. You take a step and the heel suddenly drops. I thought maybe the first pair was just an accident, but it happened again with the second pair. Really annoying. I love Asics and this is the only shoe I've ever come across. This is just a model.