It describes the smallest code, and XXS, XS, S, M, L, XL, XXL, XXXL. Both male and female. With a wide variety of colors, styles, and sizes, you're sure to find the perfect pair of water shoes! Whether you're going to the beach or on a long hike, these shoes are perfect for any occasion. Made with a comfortable fabric and rubber soles for an excellent grip and durability, these shoes will become your favorite summer item.