These socks have a terry style sole with a ribbed leg creating a lighter sock than the Terry socks, while retaining the warmth and moisture wicking properties. They are comfortable and hard wearing. The magic of alpaca socks is that they can be aired out after a days wearing and should only be washed when necessary. Canadian made for Canadian people…the ULTIMATE Sock for cold weather activities and work. If your feet are comfortable, so are you. Alpaca Socks are a gift Canadians LOVE to give and receive!