Completely submersible waterproof socks. Protects during intermittent periods of wading in knee-high and deeper water. Developed for the canoeist and kayaker to keep their feet dry while getting into and out of their craft. Three layers, securely bonded together throughout. In-cuff seal at top of calf blocks water from entering over the top of the sock. Stretch-to-fit to avoid uncomfortable sags and wrinkles, even in strenuous activity. Seamless design provides the ultimate in performance and comfort. Each sock is high-pressure tested to ensure that it has no leaks. Men's shoe sizes sm: 5-6, md: 7-9, lg: 10-11, xl: 12-13; Women's shoe sizes sm: 6-7, md: 8-10, lg: 11-up.