100% Polyester Imported Sizing Guidelines: Adult Small : Shoe Size Mens 4-6 | Womens 5.5-7.5 / Adult M: Shoe Size Mens 6-8 | Womens 7.5-9.5 / Adult L: Shoe Size Mens 8-10 | Womens 9.5-11.5 Machine wash warm. Use only non-chlorine bleach when needed. Tumble dry low. Elastic Ankle / Arch Support; Exceptional Moisture Management. Breathable, Comfortable Elastic and Full length soccer socks Breathable mesh and high elastic fiber plus the unique design make these socks able to prevent Shinguard during game or practice!