The Thorlos Experia XCCU Thin Cushion Running Socks are designed to provide maximum comfort and protection for women ultrarunners. These socks feature thin cushioning in the ball and heel for impact absorption and protection against blisters. The socks are made from a moisture-wicking fabric that keeps your feet dry and prevents odor. They have a low-cut design that stays in place and doesn't slip down while running. With their superior cushioning and moisture-wicking properties, these socks are a great choice for women who want to go the distance in their ultrarunning endeavors.