I think its the way the toe box straps are set. OH MY GOD THESE ARE AMAZING! Last pair I got, this is my 3rd, was too large, so I sized down from 6 to 5. Borraron mis comentarios y no publicaron el problema que tuve. Very pleased with them and would buy again if I lived in a climate where I wore them all the time. Même si javais prise la même grandeur que je prends tout le temps avec Clarks . But, again, Im unusually small. Estuve buscando una buena funda para mis AirPods, y después de leer varias reseñas positivas sobre la calidad de este producto, y en base a mi buena experiencia con todas mis compras de Rifle Paper Co. Ive had them for about a month using them for online classes and I like them a lot. So I, unfortunately, have to return it.