Difference of width, sizing, and footbeds spanning from 37R-39R. NOT A FIT CHECK!!! Just helpful images. USA sizes for me are ugg/adidas 7, Nike 7.5, Vans 8. : r/Birkenstocks
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Comparing width and length of narrow and regular original footbed. Captions included. Extra information in the comments : r/Birkenstocks
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