Each playing shirt must include the following defined areas, which must be reserved as follows:
Collar zone: this area may only contain team identification in accordance with. The collar zone must be free of any manufacturer identifications or sponsor advertising.
Number zone: the area on the back of a playing shirt reserved exclusively for the shirt number. The number zone is based on a two-digit number, and must extend 2cm above the highest point and 3cm below the lowest point of the two digits, and horizontally 3cm from the left edge of the left-hand digit and 3cm from the right edge of the right-hand digit. The number zone must be free of any team, manufacturer or other identification or advertising.
Sleeve free zone: this area on each sleeve is reserved exclusively for the badges described in. The sleeve free zone must be free of any team, manufacturer or other identification or advertising.