Yea, i'm curious to see what these look like when they're worn consistently, that was a big flex point.
aside from what you outlined above....on the flightposite exposed, there are no vents.....so to make the medial side of the exposed more "streamlined"....they added two ridges towards the front to make the medial and lateral sides of the shoe identical.
When the exposed failed....they put back on the zipper, and cut holes into the existing mold to put back the vents...right over one of the additional ridges.
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