I was very disappointed in this shoe. I have bought this identical shoe several times from running stores, but decided to order it from Amazon to save a few bucks. I haven't changed the way I run or anything,  but typically I get a good 6+months out of my shoes ( I retire them still with tread life left.) However, its been 4 1/2 months, and the tread it completely worn out (flesh with the bottom of the shoe). Very disappointed.