Exclusive THOR·LON® construction for durability and better wicking. X-Static® -The Silver Fiber is knitted into the foot area to provide permanent anti-microbial and anti-odor benefits. Moderate cushioning in ball/heel reduces shock, impact and blisters. Thin cushioning at instep for lace pad pressure protection. Fiber Contents: 77% Exclusive THOR·LON® Acrylic, 12% Stretch nylon, 6% X-Static® Anti-microbial, 5% Spandex