For serious walking comfort in the roughest weather, the Stormsock is a 3-layer hiking sock that\'s waterproof, stretchy, insulating and moisture wicking. All this performance is packed into a heavyweight merino blend construction that also offers cushioning and the natural anti-odour properties typical of merino alongside the lightweight stretch of elastane and nylon. Built to cover you up to the calf and sit smoothly against the foot, the Stormsock is as impactful as a sock can get.100% waterproof boot-length sockMerino wool - natural antibacterial, anti-odour propertiesDense terry cushioning throughoutInsulatingNatural moisture-management - wicks sweat away from the skinPerformance Fit - close and supportive and won\'t slip downFlat Toe Seam - reduces bulk and abrasion to the toesOuter fabric: 95% nylon / 5% elastaneInner fabric: 54% Merino, 36% polyester, 7.5% nylon, 2.5% elastane