95% Polyester, 5% Spandex Machine Wash Fits Shoe Size 6-10 (sock size 9-11). The socks with less pattern tend to stretch better and will fit up to shoe size 12/13 20 Pairs Value Pack, Colorful Patterns or Basic Solids as seen in the image 20 Fun Colors to Match any Uniform, Perfect for a Season Stock Up Comfortable, Lightweight, Trendy and Unique Designs, Huge Variety of Classic, Stylish & Funky Fun Colors