Extreme Alpaca Boot Socks 14-17 (Fit Men's Shoe Size 13-15) 75% Alpaca This is the original Extreme Alpaca tm Sock! Produced entirely in North America of North American Alpaca Fiber! Alpaca's natural wicking ability will keep feet warm & dry Now with reinforced heel and toe Sock Size 14-17 Fit Men's Shoe Size 13-15