The original American Basketball Association (ABA) was founded in 1967 as a challenger to the established NBA. After fierce competition between the two for fans and players, 4 ABA teams were absorbed by the NBA in 1976. The Kentucky Colonels, the league's most successful team, was oddly not among them, nor were the Spirits of St. Louis.
The sweatshirt is great, but the image on the website needs to be updated. A short sleeved shirt is shown and I think that led to confusion with my initial order.