AG jeans have a vintage feel but modern sensibility that's tough to find. AG's denim artisans troll flea markets and vintage shops the world over to find the perfect vintage jeans to replicate, from the washes to the perfectly worn-in feel, at the famed Koos Manufacturing plant (which has also produced jeans for Gap, Calvin Klein and J. Crew). Founded in 2000 by Adriano Goldschmied and Koos head Yul Ku, the made-in-the-U.S.A. brand mixes impeccable, tradition-driven construction with casually daring styles and colors.