Red and Green Wrestling Referee Wrist Bands. Make the right calls with these referee wristbands. Essential tool for the wrestling referee. Their wide width make them easy to see by scorekeepers on the mat. Our 6-inch wristbands are made with 80% Cotton, 12% Spandex and 8% Nylon. Superior moisture wicking material made from a unique blend of cotton, spandex and nylon. Super absorbent to keep you dry.