Euro Sizing: Please see conversion for the best size to choose:Women's Us 4/Big Kids Us 2 = Euro 35Women'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 41Slip into the Birkenstock Women's Boston Soft Footbed Clogs and buckle up for all-day comfort with a classic design that feels at home indoors or out. Whether making your daily dash to the corner store, lounging around the house, or heading out on the town with friends, these ultra-soft Birks are a prime choice and feel as good as they look.