Ausangate Alpacor Mid-Calf Argyle Socks for Men 75% Alpacor/ 25% Nylon Imported Smooth and soft knit body Knit with Alpacor yarn patented technology for softness and durability. Welt cuff keeps socks in place. Timeless and classic socks design meets Alpacor yarn knitting technology. Flat toe seam. Machine wash and dry alpaca fiber socks.