Woolmax Endurance Pro No Show (Blue) 36% Wool / 32% Acrylic / 26% Nylon / 4% Polyester / 2% LYCRA spandex Made in USA Turn socks inside out before washing. Machine wash warm. Do not bleach. Tumble dry low temperature. Do not iron. Comfort band Ventilation channels Reinforced heel & toe Comfort toe seam Targeted cushioning for added support and comfort