Our Rugged-Fit premium merino wool crew socks are intended for the most intense and durable uses. With a full cushion foot and a ribbed athletic weave around the calf, our Rugged-Fit crew socks find the perfect balance between comfort, breathability, durability, and athleticism. These socks are for hiking, skiing, hunting, exercise & fitness, or anything else intended for rugged wear. We make these socks in the United States in Southern California. They are premium quality and well worth the price as they will last for years. Material Composition: 62% Pima Cotton, 21% Merino Wool, 10% spandex, 7% nylon Size: Unisex Adult Size. Fits most men, most women.