Browning Hosiery Men's Work Boot Sock, 2 Pair Pack Polyester Nylon Acrylic Made in USA 40% Dry Comfort Polyester, 40% Acrylic, 17% Nylon, 3% Spandex Lightweight crew; Arch support for added fit; Flat toe seam Full cushion foot; Moisture management Machine wash warm, tumble dry low, no bleach United States