I have narrow and flat feet and I'm an overpronator, so this was supposed to be THE shoes for me. However after wearing it for several minutes, this was the WORST and most uncomfortable shoes I had ever worn. I would feel pain in my feet after walking with these for only several minutes. There simply is no cushioning and no shock absorption.
This shoe has a very nice colors, which you can't find in any other shoes, but that's it. Avoid these shoes. I highly recommend overpronators who have narrow flat feet to go for Brooks Adrenaline GTS 10, which I got after returning the Addiction 9, and am totally satisfied with. Lighter, as supportive, but comfortable at the same time.