Sole sizes are US. Label shows UK. M = Men's W = Women's Water-friendly, ventilated forefoot for breathability and lightweight The Crocs shoes will display US sizes WEAR FOR ANY OCCASION : these men's and women's Crocs serve as great house shoes but also ideal for the beach, pool, gym, shower, walking or even gardening CROCS FOR WOMEN AND MEN : the Crocs Classic Clogs are not only the most comfortable shoes for women and men but also easy to clean just using soap and water and allowing for a quick dry