I'm surprised I haven't reviewed them yet because I had a super long saga with them which involved in total 4 colors of the same model of shoe due their incompetence, poor policy and well... prepare to read my saga if you dare! This happened a while ago so I may not remember exactly but because I was incorrectly under the impression that I have flat feet, I ordered Nike models that were for flat feet but they ended up hurting my feet so I then realized I have some arches so I needed neutral support. I wasn't sure what size would fit me in Nike (I avoided them for most of my life) so I ordered a 5.5 based on reviews that the one I wanted ran small. The order arrived fine (I used PayPal to pay, this will be relevant later), but the shoe was too big! I go about putting down a size 5 on the exchange form and mail it back myself. Previously I had returned shoes to the store (NOTE: certain stores will allow returns and mail back your order from the store if you use PayPal or they may tell you to return it yourself, they can only credit orders using credit card payments) and someone mailed them for me but I've found increasingly dodgy and terrible customer service in store (another issue, but I avoid going to their stores). I'm not a pansy but their SAs in store are another matter.
In retrospect I should have just ordered a 5 separately with a credit card and took a return fee deduction for the return shipping. In the two weeks or so it takes the shoes to their warehouse, I notice that the original color I wanted went out of stock on their website but I receive an email finally that the return is being shipped. When it arrives, it's in the WRONG COLOR and the shoes show signs of bits of dirt like someone ran in the woods. It grosses me out so I contact their customer service and they confirm that there are no Size 5's left in that colorway. I concluded that whomever processed the return put the shoes accidentally in the wrong box. It's 100% THEIR mistake, but if I want to get a refund I'd have to go through the original two methods: 1) Try to get a store to mail it back or 2) Mail it back myself, take the hit and/or try to argue with their CS about waiving the return shipping since it's their mistake. I contacted SEVERAL customer reps, until one offered me a charge free order, aka I order the new pair without them charging me but in good faith I mail back the wrong pair. That seemed fair to me, so I take their offer and select a new colorway. Literally, the next day that colorway GOES ON SALE... for about $20 less so I contact them and ask if they can offer me a price adjustment when I receive the shoes since it's within their policy. I don't know if their warehouse inventory or if their software is messed up or if their customer service reps were lying but they claimed the shoes weren't showing up in the on sale colorway (even though I checked on several other browsers and another desktop computer). They basically refused to do a price adjustment even though I could see the colorway on my end. When the shoes arrived, I promptly chose to exchange yet again for another colorway that wasn't on sale basically to stick it to them. This whole saga took place over almost 3 months. I was in fear that I would be exchanging that one shoe for the rest of my life. Oh and I HAD to tell them that one of the orders was charge free so as to not refund me. I would have gotten the shoes for free (which I think I deserved after all that) but I believe in bad karma and so should you, since the customer rep who made that order for me would have gotten into trouble.
All in all, I DO NOT recommend ordering from them if you're not sure of fit - if you can, try and buy in store. They don't carry my size in a lot of styles near me, let alone colorways so I had no choice. IF you must make returns, return by mail and take a hit OR deal with their $#*!y, uninterested and dodgy in store workers if you must.