Birkenstock MADRID women's Mules / Casual Shoes in Brown Leather, Available in women's sizes. 4, 7, 8, 2, 2, 3, 4, 5, 7, 7 / 8. Look at the logo on the insole: it will tell you if the shoe is a normal width (outlined foot icon), or a narrow width (filled-in foot icon.) Free Next Day Delivery & Free Returns on all orders!