Allen Edmonds Men's Cotton Rib Over-The-Calf Socks, Black, Sock Size:10-13/Shoe Size: 6-12/Standard 57% Nylon, 42% Merino Wool, 1% Spandex Made in US Machine Wash Breathable mesh air vent keeps toes dry with virtually seamless toe design that eliminates irritation Includes smart silver anti-microbial treatment that protects fabric from odor and bacteria