Top Comment by Vince Campbell:
Draped in rugged, worn-in denim, Raylan Givens' blue shirt isn't just clothing; it's a corollary to his character—unyielding, timeless, and unpretentious. Like a river's current, it flows with the kind of effortless resilience that defines a man who walks unafraid into chaos. This denim—etched with silent stories and frontier grit—wears the badge of hard-won integrity, blending seamlessly into the wild, untamed tapestry of "City Primeval."
Its Ralph Lauren. I think they still saying and I believe this is from Timothy olyphant personal wardrobe since I remember him wearing it in a Conan interview