Futuro Restoring Dress Socks for Men, Firm Compression, Over the Calf, X-Large, Black Firm Compression (20-30 mm/Mg) Graduated compression helps improve circulation Ideal for standing or sitting all day, traveling or active office work Durable, reinforced toe and heel provide lasting wear Comfort band ensures socks stay in place Great for business casual and weekend wear Over-the-calf style enhances coverage Made from a comfortable blend of nylon and spandex Place thumbs inside sock and gather material. Slip foot inside sock and gradually pull up and over heel. Adjust heel for comfortable fit. Gently slide sock up leg and smooth out wrinkles.