Extreme Alpaca tm Socks - These are the original, often imitated, but never matched, these are simply the best alpaca socks being made today!   Cushy softness to be enjoyed whenever winter chills the toes. Wear these thick, terry knit socks as slippers inside. Wear outside in hiking, hunting, wading, or work boots. They will extend the enjoyment of winter activities.**The sizes are sock sizes not shoe sizes!!**10-13 socks fit ladies that wear a 10-12 shoe size or a mans 9-11 shoe size Made in USA!74% Alpaca, 24% Nylon, 2% ElasticNow with reinforced heel and toeRecommend hand wash in cold water.  Lay flat to dry.