They have been worn by Tartan Army fans at football tournaments around the globe for decades.
But kilt-clad Scots could be banned from sporting sporrans when the national team travels to America for the World Cup in June.
Under entry rules to host venues in Massachusetts and Florida any bags bigger than 4.5in x 6.5in are currently not permitted unless they are transparent, which would mean the traditional decorative pouch could not be worn as it would be too large.
It is understood that Fifa, football’s governing body, has raised the issue with officials at the Gillette Stadium, near Boston, where Scotland will take on Haiti and Morocco, and the Hard Rock Stadium in Miami, where Steve Clarke’s side will face Brazil.
Scotland fans face having to ditch their sporrans to comply with stadium rules at the World Cup
Scotland fans are expected to flock to the US for their first World Cup since the late 1990s
Fans are now seeking an ‘urgent’ update on whether part of the national dress will be allowed.
Hamish Husband, spokesman for the Association of Tartan Army Clubs, said: ‘We demand urgent clarification from Fifa.
'It’s a vital piece of equipment… the sporran does contain their phone and match ticket into the grounds.’
Officials at the Gillette Stadium told the Sunday Post they were working with Fifa on what items may be permitted.
Management at Miami’s Hard Rock Stadium are also in talks with the governing body.
Scotland's 4-2 victory over Denmark last November earned the national team a coveted place at the tournament and experts have warned that each host country has its own visa requirements.
The 2026 World Cup kicks off in June at Mexico City's Estadio Azteca, and will be hosted across 16 cities in the United States, Mexico and Canada.
Fifa was contacted for comment.
