These Cotton Socks are super soft, comfortable, breathable, sweat-absorbent, deodorant which guaranteed to keep your feet fresh and dry. Specifications: Material: 75% cotton, 20% polyester, 5% spandex; Size: one size fits most, fit for US 5-10 shoe size; Package includes: 5 Pairs of cotton socks Washing tips: In order to avoid damage and extend use time, hand wash with cold water. Do not bleach or tumble dry warm. Cleaning separately will be better, machine wash is ok.