Blake Spiers took careful notes as a kid while watching his dad run various apparel companies. He’s the son of clothing industry veteran Ivan Spiers, a savvy marketer who runs Irvine-based nZania LLC.

Irvine apparel maker nZania LLC has shut down. The company, which had licensed or produced clothes under the brands Black Flys, Andy Warhol by Levi’s, Disney and others, closed after a bank withdrew a ...