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 inner lining: wicking liner for moisture management, between: our stretching waterproof, breathable MVT membrane, outer shell: Nylon/Lycra Spandex offering a durable , flexible, stretch covering. 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 has no leaks.