Introducing EXPERIA X SPEED, designed and made in the U.S.A by the world's best sock engineers. This premium collection of running socks offers performance, durability, comfort and fit. Powered by Ionic+ Technology, X SPEED is engineered to release Silver Ions in the presence of moisture vapor, delivering anti-microbial benefits and reducing odors. Anatomical fit technology customized to the unique shape of the left and right foot for an enhanced fit. Ionic+ TM Technology designed to eliminate odor causing bacteria. Moisture-Wicking fibers draw perspiration away from the skin, keeping feet dry and comfortable. Reflective logo design detail to keep you visible. Smooth toe seam to prevent blisters. Breathable mesh zones provide air circulation and quick moisture transfer to keep feet dry. Performance thin cushion to absorb impact while providing a second skin fit. Y-heel engineering and rib cuff to prevent pull downs or bunching. Fiber content: 68% Recycled Nylon, 22% Nylon, 10% Elastic. Proudly Made in USA of domestic and imported yarns.