Engineered with durable, long lasting Polypropylene fiber that has superior moisture wicking properties. Bacteria and odor resistant with stain and fade resistance. All colors are bleach cleanable. Sock features a double welt top for better stay up performance. An ankle support promotes stability and an arch support provides for better fit and increased circulation. Full cushion foot for shock absorbency. 70% Polypropylene, 20% nylon, 10% acrylic.