SEALSKINZ Runton Unisex Waterproof Cold Weather Mid Length Merino Wool Lined Sock Outdoor Adventure & Winter Sports, Hiking Hydrostop to Block Water Penetration

100% Waterproof | Anti-Blister | Hydrostop. Hydrostop is an elastic taping around the inside cuff of the sock. This extra barrier reduces the risk of water dripping down the leg into the sock Waterproof sock - three layer construction for warmth, durability and waterproofing. Essential for cold, wet weather pursuits: hiking, trekking, mountain biking Comfort - Premium merino wool and acrylic blend, with terry-loop knitting for extra comfort and sweat-wicking. Natural antimicrobial properties, stopping growth of odour-causing bacteria Support - zonal elastication for added support Please note that due to the close bond between sock cuff and skin, over prolonged use, some people may experience minor skin irritation due to the Hydrostop barrier rubbing against the skin. For those who experience any irritation, we recommend that Hydrostop socks are only used outdoors and not for a prolonged period of time.