The Birkenstock Kumba Black Waxy Leather Medium/Narrow Width CROSSED STRAPS SANDALS are a stylish and comfortable option for women who wear a US shoe size 9. These back-strap sandals feature a flat heel, adjustable strap closure, and are made of leather. The black color and medium/narrow shoe width make these sandals versatile and suitable for various outfits and occasions. With the reputable Birkenstock brand and high-quality materials, these sandals provide both fashion and function for the modern woman.