Pioneering the use of a unique hydrophilic membrane, these socks are 100% waterproof yet pull moisture away from your skin at a molecular level. Featuring a three-layer construction for warmth, durability, and waterproofing. The merino wool lining offers excellent moisture control, insulation, and comfort, while flat toe seams prevent rubbing. Hydrostop technology, a silicone-free elastic taping inside the cuff, reduces the chance of water dripping down your leg into the sock. Zonal elastication provides added support. Please note: Due to the close bond between the sock cuff and skin, prolonged use may cause minor skin irritation for some individuals. For those who experience irritation, it is recommended to use these socks only outdoors and not for extended periods.