The players must wear set numbers between 1 and 99. If the number 1 is used, it must be worn by a goalkeeper. No number may be used by more than one player in the course of each round of the qualifying competition or the final tournament.
For the final tournament, players’ names and numbers are compulsory on the back of the shirts. Numbers must also appear on the front of the shirts (at chest height) and/or on the front of the shorts.