"Boot&FieldFox Designed with moisture-moving fibers and exceptional fit for high-performance foot protection and comfort. ? Wool/acrylic blend insulates to keep feet warm ? Elastic rib top with colored stripe ? Fully thermalined leg and foot ? Mid-calf ? Heavy weight Contents: 55% acrylic, 35% wool, 10% stretch nylon, except 2% Lycra? spandex added to top"