Pearl Izumi W Attack No Show Sock White Clothing SocksSELECT® fabric provides optimal moisture transfer to keep feet feeling cooler and drier.No-show design sits below the ankle. Mesh ventilation at the top of foot. Flat toe seam construction for irritation-free comfort. 64% polyester, 34% nylon, 2% spandex. Machine wash cold, tumble dry low.Made in the USA.