The black denim jacket is the piece that gets grabbed on the way out the door without a second thought, and that instinct is correct. It works over a summer dress when the evening turns cool. It works with tailored trousers when you want something that undercuts the formality. It works on a weekend when you simply need a layer and don’t want to think about it. We’ve been pulling together our favorite versions because not all black denim jackets are equal and the differences actually matter. The weight of the fabric, the fit across the shoulders, whether the cut is boxy enough to layer over thicker pieces or cropped in a way that suits a high waist. These are the ones we’d actually reach for. Some are classic and unfussy. Some have details worth noting. All of them earn the description in the title. A great black denim jacket doesn’t just work with everything. It quietly improves everything.