These wool wader socks are made by a craftsman in a small shop in North Carolina using vintage sock knitting machines. His 45 years in the business are evident in the quality of these specialty Wader socks.They are perfect for under your fishing waders. They are also great for ice fishing, snowmobiling, and other outdoor sports. 85 % Merino Wool 12% Nylon 3% Lycra Men’s size 10-14 (shoe size)