Though he's reportedly had a deal with Nike since 2011, amid other shoe companies expressing interest in the quarterback-turned-activist, Nike reportedly negotiated a new "star" deal with Kaepernick that will include his own clothing line and royalties.
Material for Nike's new campaign featuring Kaepernick, who no longer players professional football, began circulating on September 3. No team signed him as a free agent in 2017.
The quarterback has become a polarizing figure due to his protests of police brutality and social inequality during the playing of the national anthem at NFL games.
Rich tweeted on Monday night that a member of his crew cut the trademark swoosh off his socks and that he was also planning to burn them.
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So, when I touched Lewis, I span around and that was unfortunate, as my vehicle got quite some damages. Whilst the negativity is never great, that's what powered me along.
Trump, of course, has been an outspoken critic of those protesting during the anthem, going as far as saying they should be banished from the league. A similar grievance is still pending by unsigned safety Eric Reid, who played with Kaepernick in San Francisco and joined in the protests.
The NFL said it "embraces the role and responsibility of everyone involved with this game to promote meaningful, positive change in our communities".
Nike confirmed that Kaepernick was part of the campaign and called him "one of the inspirational athletes of his generation". But the Kaepernick ad struck a nerve, timed just before the National Football League season kicks off on Thursday.
In fact, the slogan in the ad could well have been referring to Nike's decision to believe in something-and sacrifice customers and revenue as a result.
While many have lauded Kaepernick's stance, others have attacked him for what they see as disrespect to the flag and the military.