This is a sock that was made for the Royal Canadian Mounted Police, whose duties often keep them on their feet, and who require a dependable wool sock to keep their feet healthy at all times. The sock is 65% Superwash Merino wool, 32% Nylon and 3% Spandex. The inside of the sock is 90% Merino, 10% Nylon. The inside on the sole is a protective terry cushioning. The sock is treated with ProtectGuard®, an anti-microbial/anti-odor treatment and Air-vent® for natural removal of heat and moisture. Sock length is 12 inches. Color is Black. Machine wash, tumble dry. Made in Canada.