90% Nylon, 10% Spandex [15-20 mmHg Moderate Compression] Moderate, 15-20 mmHg compression can help relieve achy, tired and swollen legs and is often the preferred level for anyone who travels for long periods of time. Graduated compression is tightest at the ankle and generally decreases as it moves up the legs, helping you fight gravity. [Fashionable] Get the support you need with our lightweight microfiber women’s knee-high socks! With an elegant ribbed design, these soft microfiber socks are made with a built-in heel and comfortable toe pocket for a great fit. [Made in USA] Ames Walker brand products are proudly made right here in the USA! Premium quality materials for superior comfort, durability, and value. quality and satisfaction. [Fiber Content] – 90% Microfiber Nylon, 10% Spandex. Latex free.