Nike said yesterday that it had withdrawn a shoe displaying an early version of the American flag.

US media said the decision came after former NFL quarterback Colin Kaepernick warned the design was associated with slavery. 

Nike had unveiled the Air Max 1 USA featuring an American Revolution-era design known as the Betsy Ross flag imprinted on its heel to coincide with the US July 4 Independence Day. 

Nike "made the decision to halt distribution of the Air Max 1 Quick Strike Fourth of July based on concerns that it could unintentionally offend and detract from the nation's patriotic holiday," the company said in a statement.

"We regularly make business decisions to withdraw initiatives, products and services," the company said.

But The Wall Street Journal reported the US sportswear giant pulled the shoe following objections from Kaepernick, a Nike endorser who led kneeling protests during the national anthems of NFL games in 2016 to protest racial inequality and social injustice.

Kaepernick's protests gained national attention and drew repeated criticism from President Donald Trump, who urged NFL owners to fire players who knelt during the anthem.

Kaepernick said the design featuring 13 white stars in a circle was offensive because it was associated with a period of slavery, which was legal in the US after independence from Britain. 

White supremacist groups hostile to diversity have also recently appropriated the design, the newspaper said. 

Nike shipped the shoes to retailers but then asked for them back, and has taken the design off its website, the Journal reported.