80% Acrylic, 17% Polyester, 3% Spandex Soxnet Acrylic Unisex Soccer Sports Team Socks 9 Pack. These slightly stretchy socks will also keep shin guards secure and in place for your safety. Socks made for all sorts of team sports! Comes in a 9-pair value pack. High quality acrylic provides a more stable and stretchy finish than basic weaves; breathable, absorbent, and deodorizing! Quality Guarantee: If you have any problems, please contact us and we will gladly work with you for a satisfactory solution! Sizing Guidelines: 5-7 (Youths, US kids shoe sizes 3-8); 7-9 (Juniors, US kids shoe sizes 9-13); 9-11 (Womens, US shoe sizes 5-9); 10-13 (Mens, US shoe sizes 8-13), Machine wash warm. Use only non-chlorine bleach when needed. Tumble dry low.