Pack includes 3 pairs of athletic ankle socks for men. Notched heel-guard tab for added comfort. Arch compression. Soft, breathable nylon-blend fabric, with comfortable stretch. Go-Dry moisture-wicking technology keeps you dry & comfortable Notched seams at toe and heel for added comfort. S/M = fits shoe sizes 7-10. L/XL = fits shoe sizes 10. 5-12. 5. Machine wash cold, tumble dry low. polyester 40% spandex 2% rubber 3% nylon 55%