I buy my first pair of Birkenstock sandal about 4 year ago on sale at the mall . they be the Gizeh model , very cute . they eventually mold to the shape of my foot and become my default shoe ever since . eventually I wear out the sole , and now I be even wear out part of the cork , so I decide to buy a new pair . -lrb- I know I can get the old one repair , but I really want a pair of Arizonas as well -- plus if I repair the old shoe without have a new backup pair , whatever would I wear ? -rrb- when I buy my first pair on Amazon I have no idea about the different width -lrb- narrow vs. regular -rrb- . I do not even pay attention to what my old sandal have say , whether the little foot icon be fill in -lrb- indicate narrow width -rrb- or just a outline -lrb- regular -rrb- . and now all the writing be wear out in they , so I can not tell either way . I figure since I be a regular width in everything else , I 'll buy my usual size -lrb- woman 's 7.5 equal 38 in birkenstock -rrb- . so I buy a 38m at first , but that be a mistake . they be so wide on I ! and I do not buy narrow size in any other shoe . so I instead go for a 38n -lrb- which if I have read , be suitable for a-b width , and most woman 's shoe be b width -rrb- . they be perfect ! as soon as I try they on I love they . the synthetic Birkibuc material be comfortable and stylish , and the stone color go with anything . my coworker even think they be leather ! and now I can totally rock that `` hippie sock with sandal '' look . so fashionable .