The most comfortable merino sock ever made starts with using the best yarn possible, produced by one of the leading merino wool spinners in the world in Biella, Italy. The extra soft merino wool yarn is "top-dyed", a laborious method in which only the longest fibers are used in production. The raw wool is 100% sourced in an animal-friendly manner from sheep that are not mulesed; and with a nod to sustainability, the mill is fully powered by renewable energy resources. This fine yarn is then expertly knit by our factory, resulting in a sock with unparalleled comfort, a perfect weight, and ideal for wearing year-round. And due to the natural wicking characteristics of merino wool, the foot is kept warm in winter, and cool and dry in the summer. The sock is machine washable and dry-able, an uncommon feature in merino wool socks. • Made in Italy • 65% Merino Wool 32% Nylon 3% Spandex • B840203F5CR