Our lightest, thinnest, waterproof sock. The original, mid length, military-trusted Wiveton sock. 100% waterproof, our lighter socks are perfect for running, hiking or any activity. Aquasealz(TM) technology releases body-generated heat and moisture, while denying the entry of external elements. Natural bamboo lining for added moisture control. A sock for wet, warm weather Outer - Extra-durable nylon exterior, with 4-way stretch for an optimal fit. Mid-Section - Aquasealz(TM) membrane is 100% waterproof. Also highly effective in the release of moisture vapour from inside the sock. Interior - Bamboo lining for added moisture control. A seamless construction, with elastic support on the ankle, providing a close fit. Sealskinz accessories are made for trailblazers, united by a shared passion for adventure. Our products are designed for use in the toughest of conditions, defying the elements time and time again. The Wiveton is no different: A bamboo rayon lining has strong moisture-wicking characteristics, drawing moisture away from the skin. An Aquasealz(TM) membrane combines waterproofness with the effective release of body generated moisture. Ideal for warmer, wet conditions, when the wearer is perspiring. Reliable waterproof mid length socks. a Outer Layer - 94% Nylon, 6% Elastanea Middle Layer - AquasealzA(R) waterproof membranea Inner Layer - 75% Bamboo Rayon, 23% Nylon, 2% Elastane We don&';t like complicated things. And when it comes to the care of your socks, we want to make it as simple as possible. This is the type of sock you can throw in the wash along with the rest of your gear. No need to line dry or wash with special detergents. Since the membrane is a solid barrier, you&';ll never need to re-waterproof.a Wash at 40degC/105degFa Low Tumble Dry or Drip Drya Do Not Dry Clean, Iron, or Bleach