The Darn Tough Vertex No-Show Tab Ultralight Cushion Socks are a top choice for women ultrarunners who prioritize durability and performance. These socks are made from a blend of merino wool and synthetic fibers, providing excellent moisture-wicking properties and odor resistance. The socks feature ultralight cushioning for maximum comfort without adding bulk. The no-show tab design ensures that the socks stay in place and don't slip down while running. With their unbeatable durability and performance, these socks are perfect for women who want to tackle any ultrarunning challenge with confidence.