The rules actually say that World Cup teams can only use equipment that is approved by the International Football Association (FIFA).
But several national teams now want to go against Fifa, and with a specially designed bandage mark against discrimination and for diversity in connection with this winter's heavily criticized championship in Qatar, a country where homosexuality is illegal.
A request has now been sent to Fifa for the captain's armbands to be used during the WC this winter.
"Sends a clear message"
"That we all wear this armband sends a clear message when the whole world is watching," says England's team captain, Tottenham striker Harry Kane, in an official statement, AP writes.
Eight of the thirteen European national teams that qualified for the World Cup have so far joined the campaign, which goes by the name "One Love", and which was launched in the Netherlands 2020. In total, over sixty different teams, both clubs and national teams, are participating.
The World Cup teams in question are, apart from England: Belgium, Netherlands, France, Germany, Switzerland, Wales and Denmark.
All will use the captain's armbands already in the upcoming Nations League matches, with the exception of England and Wales, who then wear mourning bands in honor of the recently deceased Queen Elizabeth.
“As captain of the Swiss national team, I wear this captain's armband with pride.
In our team, we stand united for tolerance, respect and solidarity.
That several national teams participate in this campaign sends a strong signal.
We want to remind everyone that we humans are equally valuable and want to be treated equally," Switzerland's team captain, Arsenal midfielder Granit Xhaka, told the Swiss Football Association's website.
Sweden participates
In addition to the WC teams, Sweden and Norway also participate in the campaign.
The Swedish men's national team captain Victor Nilsson Lindelöf will wear the armband, which in addition to the text "One Love" is decorated with a multicolored heart, during the upcoming Nations League matches.
The captain of the women's national team - in Caroline Seger's absence it will probably be Magdalena Eriksson or Kosovare Asllani - will do the same during the training internationals against Spain and France in October.
"For the Swedish Football Association, it is a matter of course to stand up for diversity and work against all forms of discrimination.
Therefore, it feels natural for us to, together with many other associations, support the campaign and highlight football's power and ability to unite people," says general secretary Håkan Sjöstrand in a statement.
The five European countries that have qualified for the WC but are outside the campaign are Croatia, Poland, Portugal, Serbia and Spain.
However, Poland's team captain, Barcelona star Robert Lewandowski, announced this week that he will wear a captain's armband in Ukraine's colors during the World Cup.