My feet are normal width in the toe box and narrow in the heel and these fit extremely well, and there's enough room for my long toes. I've also got a high arch + high instep; the elastic fits nicely without overly stretching so these might be better suited to average - higher volume feet but miiiiight still be worth a try if you're lower volume because of the narrower heel and stretchy bands. I don't think they would work if you're wide along the whole foot.