I was actually questioning this myself during the semi recent Concord release. I doubled up from 2 different retail locations. One pair was a raffle win which I picked up in person and the other was an online cop. The font on both box labels were different and the outsole on 1 pair is more icy blue than the other pair. Also, one of the pairs I received has a height difference with one shoe being slightly taller than the other. Now I did look at both carefully and saw nothing alarming but fakes are getting really, really good to the point where you really need to know what to look for and examine the whole shoe. I realize there can be slight differences between pairs as they are made in different factories and a ton of these were released but the height difference is killing me and is something that's hard for me to overlook. I own 9 pair of 11's and not one pair has a height difference. The patent leather on the right shoe where it dips is also not cleanly cut which is kinda bothering me.