Description 50% Merino Wool/22% Acrylic/14% Virgin Wool/12% Nylon/1% Elastane/1% Polyester FastDry wicks away sweat Fights odor Temperature-regulating wool blend Heel, arch, toe, instep and leg cushioning Arch support Enhanced heel pocket for secure fit Ribbed channels improve ventilation on leg Mesh instep for breathability Abrasion-resistant yarns in heel and toe Stretch top stays put and reduces tension Made in USA