The name of Colorado meansRed-coloredin Spanish. Inspiration comes from the beauty of this natural landscape giving us a sense of majesty and mystery. Towering valleys, rock surfaces carved by the passing of time. Overlapping brown geological formations and lush greenery. Produced out of Japan with meticulous care on vintage stocking frame machines, each sock is a single-knit construction. For comfort, durability, and breathability, these socks use a blend of combed cotton and acrylic Dralon® yarns that feature the best possible combination of natural and man-made fibres for socks that are soft, versatile, and odour-resistant. * 45% Cotton, 45% Acrylic, 9% Nylon, 1% Polyurethane * Calf Length * Made in Japan Care: Cool wash Size Chart: | Size | M | L | | -------------- | ----- | ------ | | UK - shoe size | 6-8.5 | 9-11.5 |