With an inner lining crafted from Merino Wool, these Waterproof Cold Weather Socks from SealSkinz provide excellent insulation and regulate temperature, making them perfect for cold weather situations.A three-layer construction makes these socks 100% waterproof, windproof and breathable for all day comfort.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 rubbingFootbed Comfort - Additional footbed padding reduces pressure and absorbs shock