HIGH QUALITY MEN’S MERINO WOOL BLEND SOCKS WARMTH & COMFORT MERINO WOOL FIBERS ATTRACTS WATERMOLECULES ON ONE END & REPELS THEM THE OTHER, GIVES SOCKS THE ABILITY TO WICK MOISTURE AWAY FROM SKIN IDEAL FOR HIKING, COLD WEATHER & WORKING OUT MERINO GREY35% WOOL35%POLYESTER5% ACRYLIC5%SPANDEX