The Saucony Inferno Cushioned Quarter sock is best in class with RunDry® Pro moisture control, a seamless construction and engineered arch and heel lock stability to provide superior performance, fit and comfort whether you're running a race or errands.Details: Cushioned, everyday performance wear Engineered heel lock and compression arch support technology for the perfect fit RunDry® Pro-moisture management to keep your feet fresh and dry Airmesh venting for maximum airflow Seamless toe to prevent irritation Made with Repreve®; a sustainable fiber made from recycled plastic bottles. Each pack is made with up to 2 recycled plastic bottles Best For: Active all day to race day Fiber Content: 51% Polyester, 33% Repreve Polyester, 9% Sorbtek, 3% Nylon, 4% Spandex