KATO' is the creation of denim designer and vintage clothing collector Hiroshi Kato. The brand encompasses a number of similar but distinct collections, each drawing on various aspects of classic tailoring and vintage menswear, from military to sportswear styles. His Tool Project line is built on the premise that clothing is a tool which completes a man, using carefully selected fabrics, details, construction and washes to elevate wardrobe staples. While his AAA line takes vintage denim styles as a starting point, brought up to date with signature details. Kato's unique approach to clothing construction, particularly denim, has garnered him a cult following in his native Japan.