These simple-looking New Balance "Flagg Day" shirts will cost you $75. Never mind that the NBA Store is selling Cooper Flagg Dallas Mavericks replica jerseys for only $5 more.

On Monday, New Balance officially deemed June 25 as “Flagg day.” That’s the same day the NBA draft is scheduled to begin at Barclays Center in Brooklyn, New York.

Flagg has been a Gen Z phenom since age 15, and now, on the night of his NBA debut, New Balance is seizing the cultural moment with what it’s calling “Flagg Day”—a full-on merch drop and ...

New Balance, which has an endorsement deal with Flagg, has released a social media video that advertises the opening night of the NBA draft, Wednesday, June 25, as “Flagg Day. ...

Cooper Flagg, Duke freshman men’s basketball player and projected No. 1 pick in the 2025 NBA Draft, has signed a shoe and apparel deal with New Balance. The partnership has a personal connection ...

New Balance is kicking off its Cooper Flagg branding effort with a launch as humble as the young star’s roots: a draft-day watch party in a tiny Maine school gymnasium. The 18-year-old phenom ...

Cooper Flagg Becomes the Face of New Balance Hoops. ... “Happy Flagg Day,” Shanoff signs off. And for New Balance, it may indeed mark a turning point. Published Jun 25, 2025. GARY ADORNATO.