Front Sock: 57% cotton, 22% nylon, 17% polyester, 4% spandexBack Sock: 54% cotton, 23% nylon, 19% polyester, 4% spandex Machine wash cold Slip-on styling Knit socks Ribbed hem 2 pairs Made in South Korea Our Style No. PLAU-MA231 Manufacturer Style No. 899923PK