The Nike SPARK Lightweight No-Show Running Socks in size M 8-9.5 W 9.5-11 are athletic socks designed for various sports activities such as running, cycling, and tennis. Made of a blend of polyester, nylon, and spandex, these black socks feature arch support, moisture-wicking technology, and breathable material to keep feet dry and comfortable during intense workouts. With a no-show design, these socks are lightweight and perfect for unisex adults looking for quality performance socks for their active lifestyle.