Pendleton Women's Quarter Socks 58% Merino Wool, 40% Nylon, 2% Spandex Imported Exclusive Pendleton jacquard in quarter length silhouette Made with copper technology boasting anti-microbial properties, preventing odor and releasing positive ions to promote health and wellness Arch support, compression, cushioned foot bed, and mesh detailing for breathability Our designers have added just the right amount of Spandex to prevent slippage and ensure a consistent fit throughout the day