Qatar World Cup organizers have rejected claims by sports brand Hummel about human rights violations in the host country, following Wednesday's unveiling of the "toned down" uniforms Denmark will wear during this year's men's tournament.
Hummel says the subtle message on the uniform represents a protest against alleged human rights violations that have occurred in Qatar.
"We do not wish to be visible during a tournament that has cost thousands of people their lives," read an Instagram post by Hummel.
The Guardian reported last year that 6,500 migrant workers had died in the country in the 10 years after Qatar's successful bid to host the tournament, most of whom were involved in dangerous and low-paid jobs.
often performed in extremely hot conditions.
The report, "categorically" rejected by tournament organizers, did not link all of those deaths to World Cup infrastructure projects, and has not been independently verified by CNN.
Tournament organizers reaffirmed their "genuine commitment to protecting the health and safety" of the tens of thousands of workers around the event.