Lightweight and ultra-thin, the Browning Liner Sock is ideal for warm-weather wear. Polypropylene fabric reduces friction and wicks away moisture, while providing warmth and comfort without excess weight. An antimicrobial treatment fights unwanted odors, ensuring that feet stay fresher longer. The flat-knit toe seam prevents bunching and chafing, and built-in arch support helps reduce foot fatigue. 98% polypropylene, 2% spandex fabric. Made in the USA.