Richer Poorer's Oakley Socks have a classic tube design that offers great support in a flexible, one size fits most style. The double twisted yarn gives a midweight feel and the strong low profile seams eliminate irritation and strengthen durability. The fabric is a blend of Combed Cotton, Polyester, Nylon, and Spandex. Features: - Classic tube sock styling - 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, Polyester, Nylon, Spandex - Wash cold. Tumble dry low - One size: US men's sizes 6 -12