CloudLine Merino Wool 1/4 Top Running & Athletic Socks- Light Cushion- Mfr in US 6% spandex The softest wool running socks on the market. Light weight premium merino wool quarter top running socks with reinforced cushion zones for durability and comfort 63% Ultra soft merino wool, 31% Nylon, 6% Spandex. Made from ultra-fine 22.5 micron merino wool. Designed for long-lasting softness Quick wicking to keep feet dry; anti-microbial to keep feet fresh; vibrant colors to keep you looking good Lifetime Guarantee. Machine Washable. Manufactured in the USA with merino wool and cushioned with your free spirit in mind. Great for running, trail running, hiking, trekking, biking, walking, or just hanging out at a coffee shop. WHY MERINO? Merino wool comes from a species of sheep that produces very fine and soft wool. It is not coarse and itchy like other wool socks, but amazingly soft, while still retaining all of the wool's other wonderful properties. Your new favorite socks. Buy some today.