Eva anybody design provides unparalleled shock absorption while protecting the cast from the elements.;Unique bungee closure system is easy to use, easy to adjust and effectively secures the cast in the shoe.;Built in toe guard protects the toes and prevents debris from entering the toe area;X-small: women's 5, small: women's 5.5 - 8, medium: women's 8.5 - 10 and men's 6 - 8, large women's 10.5 - 13 and 8.5 - 11 x-large: women's 13.5+ and men's 11.5 - 14