DetailsRicher Poorer Underwear Size Chart This classic tube stock is stylish and durable, blending soft fabrics, arch support, and durability that keeps you feeling fresh and comfortable. Features: Classic tube sock styling. Silver Lining Blend - a quality combed cotton blended with silver fibers for naturally occurring properties to help keep feet fresh and comfortable Extra arch support keeps the sock in the perfect place while giving your arch needed protection. Double twisted yarn gives a midweight feel. Non-binding bib welt keeps the socks from quitting on you. Strong low profile seams to eliminate irritation and strengthen durability. Content: Combed Cotton, Nylon, Polyester, Spandex. Wash cold. Tumble dry low.