Naturalizer flats in light brown leather sz 9 EUC

Naturalizer flats in light brown leather upper with a dark brown leather strap across the top and button accent on each outer side of strap. The straps are accommodating with a little elastic on the inside. These say size 9, however I typically wear a 10-11 depending on the brand, but these fit me fine. I wore a handful of times, so EUC. There is white spotting on the outside soles, not sure what caused them, wiped with a wet cloth, but when dry, they mostly came back. Please see the pictures.