Nothing is warmer than toasty wool socks when cold weather hits. Whether knee-highs, crews or ankle socks, wool and wool blends will keep feet comfortable and feel luxurious against the skin. Wool is one of the oldest fibers known to man and had endured because of its unique properties. It insulates against both hot and cold, absorbs moisture to keep feet dry, is durable, versatile and takes color beautifully. For a special treat, try cashmere and cashmere blend socks. Cashmere is highly prized for its silky soft hand. It's also both lightweight and extremely warm, making it a great fiber for footwear. Cashmere for socks is usually blended with a bit of other wool and a stretchy material like polyamide or nylon to maintain shape.