These compression socks are perfect for various activities. Whether you're running, cycling, driving, on your feet all day, traveling, or even during pregnancy, they're a great choice. They come in two sizes. S/M fits men's shoe sizes 6-9 and women's 5-10. L/XL fits men's 9-12 and women's 10-12. They're made of 94% polyester, 3% spandex, and 3% other fibers, and are designed to improve blood circulation, reduce leg discomfort and swelling, and have moisture-wicking properties to keep you dry.