100% Other Fibers Made in the USA or Imported Natural fiber no-show running sock features the best of nature and technology by combining natural mohair with Drynamix for ultimate anti-blister performance Soft, durable mohair features a hollow fiber structure that regulates temperature, keeping feet cool in summer and warm in winter Drynamix wicks moisture away from skin, and specially constructed, reinforced microfiber mesh ventilation panels keep feet dry Seamless toe box minimizes friction, preventing chafing on top of the foot; high heel tab and extra deep heel pocket prevents socks from slipping down, High-volume cushioning ensures comfort for extended training; race-tested, natural fiber is ideal for sensitive, blister-prone skin, unisex-teen