The Nike Spark Lightweight No Show Running Socks are perfect for women with sizes ranging from 7.5 to 9 and men with sizes ranging from 6 to 7.5. These socks are designed for activewear, specifically for walking, cross training, and running. Made of polyester, nylon, and spandex, these socks feature arch support and are machine washable for easy care. With a full toe design and opaque white color, these no-show socks are lightweight and ideal for all seasons, making them a great addition to your sports theme wardrobe.