In reply to HeMa:
Thanks for your feedback. I think covering what I am about to say in the review would have made it less well written
Agree that Five Ten 'wear your street size' has been out there in places for a few years, but the consistency of this being the case has been low due to a number of reasons.
There was a shift in sizing (and quality) with initial move from US to China manufacturing, then some shifts in alignment between the correlation of what US size represented what UK size, then the added complication of lots of UK and European stockists carrying a mixed bag of old/new, US/China for several years meaning you didn't really know which iteration you were getting especially if ordering online.
As a non-scientific case study illustrating historical lack of pattern, I've just gone through my husband's stinky back collection of Anasazis (pinks and VCS - can't be thrown out as they are 'useful' for DWS...) with a good range of purchase dates across the last 12? years. Even within the same model and country of manufacture they range in size for what he found to be "the same" comfort (ie all-day performance not aggressive performance) fit. All of these are sized either half a size or full size below his street size. There is no correlation between sizing and date of acquisition...
So I totally agree 'street size' is it not "new", but I think what Five Ten are saying is right now the NIAD is unequivocally the new and only NIAD and thus we can be sure that all available stock is made in the same place, to what appears to be a better build quality. So they are confident in promoting the 'wear your street size' system. From our tests so far this sizing certainly bears out, and we will be reviewing the new Pink and Pink LV (with similar methodology to the VCS and with experience of previous iterations) over the coming months so will have further data on this to share...