Pros - Looks amazing when worn, feels light when running Cons - Tight toe box despite going half size higher. I have used other brands for running and consistently purchased size 9.5. With this shoe, could barely get my foot in. Exchanged for a size 10 but this is still tight in the toe box area and you can see the silhouettes of my feet from the top! Adidas do no further exchange or refunds, so stuck with this. My first ultra ever and I am worried about wearing a tight shoe that goes against all advice!