In addition to the uses of team identification set out in Article 14 to Article 18, teams may display up to two team identifications in the shirt collar zone, however each identification chosen may only be used once and must not exceed 12cm². Lettering must not exceed 2cm in height.
One tonal team or manufacturer identification may also appear on each of the following collar elements and shirt fastenings, provided they pose no risk of injury and are free of sponsor advertising and decorative elements:
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shirt collar loops;
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buttons on shirt collar openings;
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other shirt fastenings (e.g. zippers).