These are the socks made of genuine Mongolian yak cashmere for peak comfort and performance. As one of the softest, warmest, and most breathable natural fibers on the planet, yak cashmere produces a durable sock that is as well-suited to wearing while reading on the couch as it is for a hike in the Himalayas. The dye-free process creates an attractive hand-crafted appearance, with naturally occurring color variations; no two pairs are alike. The fibers also wick away moisture to keep feet cooler and dryer. With enhanced arch support and flex zones. 14" H crew style. Imported. Hand wash. Brown, Gray, or Black. Sizes S, M, or L.