height. If the mat lies on a podium and the protection margin (covering and free space around the mat) does not reach two meters, then the sides of the podium are covered with 45° (degree) inclined panels. In all cases, the color of the protection area is different from the color of the mat. Equipment A "singlet" is a one-piece wrestling garment made of spandex that should provide a tight and comfortable fit for the wrestler. It is made from nylon or lycra and prevents an opponent from using anything on the wrestler as leverage. One wrestler usually competes in a red singlet and the other in a blue singlet. A special pair of "shoes" is worn by the wrestler to increase his mobility and flexibility. Wrestling shoes are light and flexible in order to provide maximum comfort and movement. Usually made with rubber soles, they help give the wrestler's feet a better grip on the mat. A "handkerchief", also called a "bloodrag", is carried in the singlet. In the event of bleeding, the wrestler will remove the cloth from his singlet and attempt to stop the bleeding or clean up any bodily fluids that may have gotten onto the mat. "Headgear", equipment worn around the ears to protect the wrestler, is optional in Greco-Roman. Headgear is omitted at the participant's own risk, as there is the potential to develop cauliflower ear. The match A match is a competition between two individual wrestlers of the same weight class. In Greco-Roman wrestling, a jury (or team) of three officials (referees) is used. The referee controls the action in the center, blowing the whistle to start and stop the action, and supervises the scoring of holds and infractions. The judge sits at the side of the mat, keeps score, and occasionally gives his approval when needed by the referee for various decisions. The mat chairman sits at the scoring table, keeps time, is responsible for declaring technical superiority, and supervises the work of the referee and judge. To call a fall, two of the three officials must agree (usually, the referee and either the judge or the mat chairman). Modern format In modern Greco-Roman wrestling, matches are contested over two three-minute halves with the winner being decided by fall, technical superiority or cumulative points across both periods (decision). The modern format emphasizes wrestling on the feet instead of mat wrestling (par terre);