The world's best socks made for every college fan. Shop hundreds of styles across 100+ NCAA teams. Amazing graphics make Rock 'Em the most unique and eye-catching sock brand in the universe! Trillions of units sold. Sock sizing here! Kids Sock= Shoe Size 2-5.5 S/M Sock= Shoe Size 6-8.5 L/XL Sock= Shoe Size 9-13+