Glen plaid or Prince of Wales check, is a woolen fabric with a woven twill design of small and large checks. It is usually made of black/grey and white, or with more muted colors, particularly with two dark and two light stripes alternate with four dark and four light stripes which creates a crossing pattern of irregular checks These socks are the epitome of design and comfort. Designed in NYC Made in Colombia 85% Cotton / 14% Nylon / 1% Spandex Men's shoe size 8-12.5