Euro Sizing:Please see conversion for the best size to choose:Women's Us 5/Big Kids' Us 3 = Euro 36Women's Us 6/Big Kids' Us 4 = Euro 37Women's Us 7/Big Kids' Us 5 = Euro 38Women's Us 8/Big Kids' Us 6 = Euro 39Women's Us 9/Big Kids' Us 7 = Euro 40Women's Us 10 = Euro 41Elevate your easygoing look with a pair of the Birkenstock Women's Arizona Big Buckle Birkibuc Sandals. These Birks are crafted from skin-friendly, tear-resistant Birk Flor nubuck material and are equipped with two adjustable straps that boast oversized, metallic buckles for a little extra elegant allure as you pass along familiar and newfound paths.