Designed for people who spend all day on their feet, Dansko’s Occupational Compression socks deliver support and durability no matter what your day has in store. Merino Wool is soft, itch-free, naturally thermoregulated, and is ideal for all-day wear. With knit-in features like the Dansko Natural Arch® and graduated compression, your feet and legs will be supported and your socks will not budge no matter what life throws your way. The 15 - 20 mmHG compression helps to prevent lower leg fatigue. Size medium fits women's shoe size 7½ to 10 43% Nylon, 21% Merino Wool, 21% Acrylic, 11% Polyester, 4% Spandex.