Nylon Made in the USA or Imported HIGH QUALITY - Looking for effective leg therapy in a high-quality dress sock? Look no further. These knee high socks offer a fashionable ribbed design that delivers gradient compression therapy, all while looking like a men’s dress sock. EXTREMELY DURABLE - Don’t purchase the same socks over and over. These firm socks come with a reinforced heel that resists shoe abrasion. They are also made with strong yarn that resists wear and tear so you can enjoy these closed toe socks for years to come. ALL DAY COMFORT - No more socks that pinch and bind. JOBST for Men is equipped with an all day comfort band that keeps your socks up without pinching or binding. A smooth toe seam and bubble shape add extra comfort to these energizing stockings. ODOR CONTROL - Keep your legs and feet cool and odor free. Microfibers wick away moisture six times faster than regular nylon for a dryer, cooler feeling. Our special formula fights odor by stopping the growth of fungi and bacteria on the socks. COMPRESSION CLASS - Compression class: 15-20. These socks are for tired, heavy legs that have a tendency to swell. Suitable for patients with reticular veins.