Our "Extreme Alpaca Socks" are warmer than wool, Softer and more comfortable with superior wicking ability to keep your feet warm and comfortable. Simply the warmest most comfortable sock you will ever wear. Unlike wool socks our Extreme Alpaca socks do not itch and are non-allergenic. Alpaca fiber is one of the warmest natural fibers on earth and outwears wool many times over. lb for lb, Alpaca fiber is 3 times warmer than wool yet as soft as cashmere. This makes it the ideal fiber for warm comfortable socks. Purchase on-line at warm-feet.com. Free Shipping. Made in the USA from alpacas raised in the USA. A Green Sustainable Resource..