The SSkinz Waterproof Cold Weather Knee Length Sock is the original, 100% waterproof, windproof & breathable knee length sock. The inner lining is crafted from fine Merino Wool to insulate and regulate temperature making this perfect for use in colder weather conditions.SSkinz Waterproof Cold Weather Knee Length Sock Highlights-Waterproof - three layer construction for warmth, durability and waterproofingComfort - Merino wool lining for moisture control, insulation and comfortSupport - zonal elastication for added supportClose fit - four way stretch for comfort and stretch fitComfort - flat toe seams prevent rubbingComfort - Footbed padding reduces pressure and absorbs shockMaterialOUTER: 90% Nylon, 10% ElastaneMembran: Hydrophilic MembraneINNER: 35% Merino wool, 35% Acrylic, 23% Polyester, 3 ... More info