We start with locally sourced fine-micron Rambouillet Merino Wool, allowing us to develop the best blend to maximize the comfort and functionality of our wool winter socks. Our wool is entirely processed in the USA, then delivered to our mill in Utah, where we knit our thick wool socks from the ground up. Wool is an organic moisture-wicking machine. It's also an incredible insulator, even when wet. This natural moisture management regulates temperature and improves airflow, keeping your feet dry and comfortable all day long!