FootSmart Men's/Women's Sensitive Feet Light Support Over-the-Calf Socks 3% nylon Provides just the right amount of compression to stay up comfortably without restricting circulation. Low-profile, flat, smooth toe seam prevents rubbing and irritation. Padding provides cushioning and redistributes pressure over the entire foot. 80% acrylic, 17% spandex, 3% nylon. Graduated Support Level: Light 8-15mm / Hg. Made in USA. Care: Machine wash on gentle cycle. Lay flat to dry.