Birkenstock BALI women's Sandals in Silver Synthetic, Available in women's sizes. 3.5. 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.) Birko flor upper Cork & Latex insole Arch support Toe ridge Heel Cup Vegetable tanning (Chrome free) Free Next Day Delivery & Free Returns on all orders!