Officially licensed NCAA University of North Carolina unc Tar heels graphic athletic crew socks by rock 'em Double banded top for unparalleled durability with double cushioned soles and impact zones Superior graphics: smooth upper sock provides a Canvas for unmatched graphic design clarity and color vibrancy Upper & lower arch compression for superior support & custom fit Small/medium fits men's shoe size 6-8.5 and women's 7.5 - 9.5. Large/X-Large fits a men's 9-13 and women's 10-13