This mid-calf boot sock offers an ideal blend of 60% acrylic, 20% merino wool, 17% nylon and 3% spandex for durability and comfort. Specialty moisture-wicking material keeps feet dry and free of chaffing. Soft merino wool makes socks breathable in summer and insulating in winter. Fits women's shoe size 6-9. Machine wash. Available in denim and charcoal.