Performance soccer referee sock with strategic mesh inserts for exceptional comfort. Updated two striped design Compression in ankle and arch for exceptional support. Cushioned heel & toe for maximum comfort. 97 % Nylon 3% Spandex Performance soccer referee sock with strategic mesh inserts for exceptional comfort. Updated two striped design Compression in ankle and arch for exceptional support. Shoe Size: Small 3.5 - 5.5 Medium 6 - 8 Large 9 - 12 X Large 11 - 13.5