The original Sealskinz 100% waterproof, windproof & breathable mid length sock featuring Hydrostop. Perfect for use in a wide variety of weather conditions. Waterproof - three layer construction for warmth, durability and waterproofing Comfort - Merino wool lining for moisture control, insulation and comfort Hydrostop - Reduces water ingress Support - zonal elastication for added support Comfort - flat toe seams prevent rubbing Comfort - Footbed padding reduces pressure and absorbs shock Hand made and hand tested in the UK The Hydrostop technology creates a seal between the sock cuff and skin, helping to reduce the amount of water from running down the leg and into the sock. Due to this close bond between sock cuff and skin, Hydrostop socks are recommeded only for outdoor use and not for a prolonged period of time. Incorrect or prolonged use can result in excessive rubbing against the skin and may in a very small minority of cases cause minor skin irritation. The Hydrostop seal materia