I bought this shoe to run in exclusively and its been fantastic. They are very comfortable and I haven't had any aches/pains. Definitely the best shoe Ive ever ran in.  Love them (and their neon color)! The shoes do come with a warning tag that reminds the wearer that these are running shoes, not street shoes, and that they can put extra strain on some of the leg muscles so ease into them. I would buy these again.  I ordered a .5 size up for running and the fit is perfect.