Made in the USA. Stay warm with our Winter Collection! These boot length Socks are engineered to provide warm, dry, and long-lasting comfort. Using our special blend of the finest Alpaca yarn with microfiber ensuring optimum performance and durability. Alpaca is a naturally soft fiber, with water-resistant and moisture-absorbing properties sure to keep your feet nice, warm, and dry through any harsh, cold temperature climate. Longer boot length design, lined with terry for warmth, mesh stitch for improved airflow and breathability, ribbed arch for added support, and reinforced toe and heel for durability.