Nike have launched an all-black Colin Kaepernick jersey to mark four years since the former San Francisco 49ers quarterback took a knee during the national anthem in protest against racial inequality and injustice in America.
CNN report that the $150 Icon Jersey 2.0 sold out in less than a minute after going on sale on Thursday morning.
Kaepernick has been without a team since opting out of his contract with the 49ers in March 2017, though he is still training in the hope of securing a return to NFL.
Critics at the time said he was disrespecting the United States and its flag, although the NFL in June changed course on their previous opposition to his and others' kneeling protests, conceding they made mistakes in not listening to the players.
Kaepernick posted on Instagram on Thursday: "Four years ago, I took a knee to protest against systemic racism and social injustice. It was that day that the number on my jersey would come to represent something greater than football, something greater than me.
"Since then, the number 7 jersey has become a symbol for advancing the liberation and well-being of Black & Brown communities. Thank you for staying True."