Experience ultimate dryness and comfort with these SEALSKINZ Runton socks. Pioneering a unique hydrophilic membrane, they offer 100% waterproof protection while actively wicking moisture away from your skin. The three-layer construction ensures warmth, durability, and excellent waterproofing. Inside, a merino wool lining provides superior moisture control, insulation, and comfort, with flat toe seams to prevent rubbing. The innovative Hydrostop feature, a silicone-free elastic taping inside the cuff, acts as a barrier to prevent water from dripping down your leg into the sock. Zonal elastication adds extra support for a secure fit. Please be aware that due to the close bond between the sock cuff and skin, prolonged use of the Hydrostop barrier may cause minor skin irritation for some individuals. If irritation occurs, it is recommended to use these socks for outdoor activities only and not for extended periods.